Error Codes

[WebsterMB]

I have just gotten a check engine light and borrowed my neighbor's OBD II code reader. I get two codes; PO170 & PO173. They are generic and the definition is "Fuel trim malfunction, Bank 1 & 2".
Can someone tell me what the problem is, and is it owner fixable.

Thanks for your help,

WebsterMB

 

[piestore]

Fuel trim

Hi
These are not MB codes but I think they probably translate as "self adaptation at limit bank 1 and 2 " best guess you need a new air mass meter
good luck

 

[SLinKyjoe]

Is there a list of these error codes available anywhere for us to explore so as we can check to tell if our dealers are explaining things right?

Or is that a bit of a daft question what with mercs never going wrong and that?

 

[philharve]

Fault Code Reader

Hi All

The 'error codes' that are occasionally mentioned ... are these the same as fault codes?

I have seen a small handheld box with an alphanumeric display and a cable and plug which presummably plugs into an M-B, somewhere. It was called a Fault Code Reader.

Is there any point to owning such a tool, always assuming it's not too expensive? Would it help diagnosing problems?

REGARDS Phil

 

[guydewdney]

i bought a scantool for 90 quid - and adapted it to be used in my 140 - by cutting off the plug and re-wiring it to a mb plug (a draper re-set tool)

have a look at digimoto.com and scantool.net
(if u do a uk search i think the company will come up - look for obdII code reader)

i got it to read out an error code (forced by unplugging a temp sensor)eventually - but my car doesnt have a 'check engine' light - i have all the software / links at home not here.

 

[philharve]

Fault Code Reader

Hi guydewdney

Is it a useful tool to own? Can it help with diagnosing/repairing faults or is it the kind of tool that provides a readout that is only of value when discussing the problem over the 'phone with a technician?

REGARDS Phil

 

[philharve]

Is this a silly question?

I have been reading about fault codes and one question keeps cropping up. I am not able to answer it myself but I'm hoping another member can. It is this. What kinds of faults are logged by the ECU and are they time & date stamped? In other words does the ECU keep a log (a diary) of faults recording when they occur, when they are cleared? Or are the faults logged with no time or date information ... as a list of fault codes?

When faults are remedied by the service technician are their fault codes automatically deleted by the the ECU or does the technicain have to reset them with a tool? I know that some fault codes have to be reset manually. Either way ... is the log is cleared?

Let's take an example. If a bulb blows, an indicator (say), does the ECU record it, OR is this type of fault so insignificant or unimportant that there is no detection circuit associated with bulb failure, hence it is not detected by the ECU?

Take another example. If a brake pad wears to the point where it has to be replaced (a significant fault?), does the ECU record the fact that wear had been detected and the pad has been replaced?

I assume SRS, ASR, BAS faults are recorded because they are potentially life threatening if nothing is done?

Or is it a case that the ECU only records faults associated with the engine and transmission, etc., and other major systems, like braking, fluid levels, etc.?

With a car as sophisticated as a Mercedes many systems must be monitored and their faults recorded for subsequent interrogation.

Perhaps it is an easier question to ask what systems are not monitored and therefore do not have fault codes?

REGARDS Phil

 

[Mid_lfe_Crisis]

Display Code Possible Cause
E0 01 No faults in system
E0 02 A/C push button control module (N22)
E0 03 Rear climate control module
E0 06 Connection to switchover valve block (Y11)
E0 07 Data exchange (CAN B), short circuit
E0 08 Data exchange (CAN A), short circuit
E0 09 Data exchange (CAN A and B), short circuit
E0 10 Repeat displaying for malfunction readout
E0 11 Data exchange (CAN B), open circuit
E0 12 Data exchange (CAN A), open circuit
E0 13 connection to rear climate control module
E0 14 Data exchange (CAN B), open circuit (rear climate control)
E0 15 Data exchange (CAN A), open circuit (rear climate control)
E0 16 In-car temperature sensor w/ aspirator blower (B10/4), short circuit *)
E0 17 In-car temperature sensor w/ aspirator blower (B10/4), short circuit **)
E0 18 In-car temperature sensor w/ aspirator blower (B10/4), open circuit *)
E0 19 In-car temperature sensor w/ aspirator blower (B10/4), open circuit **)
E0 24 Left heater core temperature sensor (B10/2), short circuit *)
E0 25 Left heater core temperature sensor (B10/2), short circuit **)
E0 26 Left heater core temperature sensor (B10/2), open or short circuit *)
E0 27 Left heater core temperature sensor (B10/2), open or short circuit **)
E0 28 Right heater core temperature sensor (B10/3), short circuit *)
E0 29 Right heater core temperature sensor (B10/3), short circuit **)
E0 30 Right heater core temperature sensor (B10/3), open or short circuit *)
E0 31 Right heater core temperature sensor (B10/3), open or short circuit **)
E0 32 Outside temperature sensor (B10/5), short circuit *)
E0 33 Outside temperature sensor (B10/5), short circuit **)
E0 34 Outside temperature sensor (B10/5), open or short circuit *)
E0 35 Outside temperature sensor (B10/5), open or short circuit **)
E0 36 Evaporator temperature sensor (B10/6), short circuit *)
E0 37 Evaporator temperature sensor (B10/6), short circuit **)
E0 38 Evaporator temperature sensor (B10/6), open or short circuit *)
E0 39 Evaporator temperature sensor (B10/6), open or short circuit **)
E0 40 A/C Coolant temperature sensor (B10/8), short circuit *)
E0 41 A/C system coolant temperature sensor (B10/8), short circuit **)
E0 42 A/C system coolant temperature sensor (B10/8), open or short circuit *)
E0 43 A/C system coolant temperature sensor (B10/8), open or short circuit **)
E0 44 Refrigerant pressure sensor (B12), short circuit *)
E0 45 Refrigerant pressure sensor (B12), short circuit **)
E0 46 Refrigerant pressure sensor (B12), open or short circuit *)
E0 47 Refrigerant pressure sensor (B12), open or short circuit **)
E0 48 Left temperature selector wheel, short circuit *)
E0 49 Left temperature selector wheel, short circuit **)
E0 50 Left temperature selector wheel, open or short circuit *)
E0 51 Left temperature selector wheel, open or short circuit **)
E0 52 Right temperature selector wheel, short circuit *)
E0 53 Right temperature selector wheel, short circuit **)
E0 54 Right temperature selector wheel, open or short circuit *)
E0 55 Right temperature selector wheel, open or short circuit **)
E0 72 Heater supply unit circulation pup (A31m1), short circuit *)
E0 73 Heater supply unit circulation pup (A31m1), short circuit **)
E0 74 Heater supply unit circulation pup (A31m1), open or short circuit *)
E0 75 Heater supply unit circulation pup (A31m1), open or short circuit **)
E0 76 Heater supply unit circulation pump (A31m1), over load *)
E0 77 Heater supply unit circulation pup (A31m1), over load **)
E0 80 Heater supply unit left duovalve (A31y1), short circuit *)
E0 81 Heater supply unit left duovalve (A31y1), short circuit **)
E0 82 Heater supply unit left duovalve (A31y1), open or short circuit *)
E0 83 Heater supply unit left duovalve (A31y1), open or short circuit **)
E0 84 Heater supply unit right duovalve (A31y2), short circuit *)
E0 85 Heater supply unit right duovalve (A31y2), short circuit **)
E0 86 Heater supply unit right duovalve (A31y2), open or short circuit *)
E0 87 Heater supply unit right duovalve (A31y2), open or short circuit **)
E0 88 A/C compressor ground activation *)
E0 89 A/C compressor ground activation **)
E0 90 A/C compressor ground activation, open or short circuit *)
E0 91 A/C compressor ground activation, open or short circuit **)
E0 96 Auxiliary fan, 1st activation, short circuit *)
E0 97 Auxiliary fan, 1st activation, short circuit **)
E0 98 Auxiliary fan, 1st activation, open or short circuit *)
E0 99 Auxiliary fan, 1st activation, open or short circuit **)
E1 00 Auxiliary fan, 2nd stage activation, short circuit *)
E1 01 Auxiliary fan, 2nd stage activation, short circuit **)
E1 02 Auxiliary fan, 2nd stage activation, open or short circuit *)
E1 03 Auxiliary fan, 2nd stage activation, open or short circuit **)
E1 04 Auxiliary fan, 3nd stage activation, short circuit *)
E1 05 Auxiliary fan, 3nd stage activation, short circuit **)
E1 06 Auxiliary fan, 3nd stage activation, open or short circuit *)
E1 07 Auxiliary fan, 3nd stage activation, open or short circuit **)
E1 08 After-run pump relay (K30), power supply, short circuit *) ***)
E1 09 After-run pump relay (K30), power supply, short circuit **) ***)
E1 10 After-run pump relay (K30), power supply, open or short circuit *) ***)
E1 11 After-run pump relay (K30), power supply, open or short circuit **) ***)
E1 12 Engine rpm increase diode matrix (V2), short circuit *)
E1 13 Engine rpm increase diode matrix (V2), short circuit **)
E1 14 Engine rpm increase diode matrix (V2), open or short circuit *)
E1 15 Engine rpm increase diode matrix (V2), open or short circuit **)
E1 16 Charcoal filter actuator (A32m2) (OPEN), short circuit *)
E1 17 Charcoal filter actuator (A32m2) (OPEN), short circuit **)
E1 18 Charcoal filter actuator (A32m2) (OPEN), open or short circuit *)
E1 19 Charcoal filter actuator (A32m2) (OPEN), open or short circuit **)
E1 20 Charcoal filter actuator (A32m2) (CLOSED), short circuit *)
E1 21 Charcoal filter actuator (A32m2) (CLOSED), short circuit **)
E1 22 Charcoal filter actuator (A32m2) (CLOSED), open or short circuit *)
E1 23 Charcoal filter actuator (A32m2) (CLOSED), open or short circuit **)
E1 28 Left rear heater core temperature sensor (B10/9), short circuit *)
E1 29 Left rear heater core temperature sensor (B10/9), short circiut **)
E1 30 Left rear heater core temperature sensor (B10/9), short or open *)
E1 31 Left rear heater core temperature sensor (B10/9), short or open **)
E1 32 Right rear heater core temperature sensor (B10/10), short *)
E1 33 Right rear heater core temperature sensor (B10/10), short **)
E1 34 Right rear heater core temperature sensor (B10/10), short or open *)
E1 35 Right rear heater core temperature sensor (B10/10), short or open **)
E1 36 Left temperature selector wheel, short *)
E1 37 Left temperature selector wheel, short **)
E1 38 Left temperature selector wheel, short *)
E1 39 Left temperature selector wheel, short or open **)
E1 40 Right temperature selector wheel, short *)
E1 41 Right temperature selector wheel, short **)
E1 42 Right temperature selector wheel, short or open *)
E1 43 Right temperature selector wheel, short or open **)
E1 44 Right evaporator temperature selector wheel (B10/11), short *)
E1 45 Right evaporator temperature selector wheel (B10/11), short **)
E1 46 Right evaporator temperature selector wheel (B10/11), short or open *)
E1 47 Right evaporator temperature selector wheel (B10/11), short or open **)
E1 48 Coolant circulation pump (A31/1m1), short *)
E1 49 Coolant circulation pump (A31/1m1), short **)
E1 50 Coolant circulation pump (A31/1m1), short or open *)
E1 51 Coolant circulation pump (A31/1m1), short or open **)
E1 52 Coolant circulation pump (A31/1m1), overload *)
E1 53 Coolant circulation pump (A31/1m1), overload **)
E1 56 Left duovalve (water value, A31/1y1, short *)
E1 57 Left duovalve (water value, A31/1y1, short **)
E1 58 Left duovalve (water value, A31/1y1, short or open *)
E1 59 Left duovalve (water value, A31/1y1, short or open **)
E1 60 Right duovalve (water value, A31/1y2, short *)
E1 61 Right duovalve (water value, A31/1y2, short **)
E1 62 Right duovalve (water value, A31/1y2, short or open *)
E1 63 Right duovalve (water value, A31/1y2, short or open **)
E1 64 Rear refrigerant shut-off valve (Y67, short *)
E1 65 Rear refrigerant shut-off valve (Y67, short **)
E1 66 Rear refrigerant shut-off valve (Y67, short or open *)
E1 67 Rear refrigerant shut-off valve (Y67, short or open **)
E1 68 Rear tunnel flap vacuum valve (Y67/1, short *)
E1 69 Rear tunnel flap vacuum valve (Y67/1, short **)
E1 70 Rear tunnel flap vacuum valve (Y67/1, short or open *)
E1 71 Rear tunnel flap vacuum valve (Y67/1, short or open **)


Any good?

 

[Mid_lfe_Crisis]

Part 2
OBD2 Fault codes...

P0100 Mass or Volume Air Flow Circuit MalfunctionV
P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
P0102 Mass or Volume Air Flow Circuit Low Input
P0103 Mass or Volume Air Flow Circuit High Input
P0104 Mass or Volume Air Flow Circuit Intermittent
P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
P0109 Intake Air Temperature Circuit Malfunction
P0111 Intake Air Temperature Circuit Range/Performance Problem
P0112 Intake Air Temperature Circuit Low Input
P0113 Intake Air Temperature Circuit High Input
P0114 Intake Air Temperature Circuit Intermittent
P0115 Engine Coolant Temperature Circuit Malfunction
P0116 Engine Coolant Temperature Circuit Range/Performance Problem
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
P0119 Engine Coolant Temperature Circuit Intermittent
P0120 Throttle/Pedal Position Sensor/Switch A Circuit Malfunction
P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input
P0123 Throttle/Pedal Position Sensor/Switch A Circuit High Input
P0124 Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
P0126 Insufficient Coolant Temperature for Stable Operation
P0130 O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0142 O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
P0143 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
P0144 O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
P0145 O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
P0146 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
P0147 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0150 O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
P0151 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
P0152 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
P0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0156 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
P0162 O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
P0163 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
P0164 O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
P0165 O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
P0166 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
P0167 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
P0170 Fuel Trim Malfunction (Bank 1)
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
P0173 Fuel Trim Malfunction (Bank 2)
P0174 System too Lean (Bank 2)
P0175 System too Rich (Bank 2)
P0176 Fuel Composition Sensor Circuit Malfunction
P0177 Fuel Composition Sensor Circuit Range/Performance
P0178 Fuel Composition Sensor Circuit Low Input
P0179 Fuel Composition Sensor Circuit High Input
P0180 Fuel Temperature Sensor A Circuit Malfunction
P0181 Fuel Temperature Sensor A Circuit Range/Performance
P0182 Fuel Temperature Sensor A Circuit Low Input
P0183 Fuel Temperature Sensor A Circuit High Input
P0184 Fuel Temperature Sensor A Circuit Intermittent
P0185 Fuel Temperature Sensor B Circuit Malfunction
P0186 Fuel Temperature Sensor B Circuit Range/Performance
P0187 Fuel Temperature Sensor B Circuit Low Input
P0188 Fuel Temperature Sensor B Circuit High Input
P0189 Fuel Temperature Sensor B Circuit Intermittent
P0190 Fuel Rail Pressure Sensor Circuit Malfunction
P0191 Fuel Rail Pressure Sensor Circuit Range/Performance
P0192 Fuel Rail Pressure Sensor Circuit Low Input
P0193 Fuel Rail Pressure Sensor Circuit High Input
P0194 Fuel Rail Pressure Sensor Circuit Intermittent
P0195 Engine Oil Temperature Sensor Malfunction
P0196 Engine Oil Temperature Sensor Range/Performance
P0197 Engine Oil Temperature Sensor Low
P0198 Engine Oil Temperature Sensor High
P0199 Engine Oil Temperature Sensor Intermittent
P0200 Injector Circuit Malfunction
P0201 Injector Circuit Malfunction - Cylinder 1
P0202 Injector Circuit Malfunction - Cylinder 2
P0203 Injector Circuit Malfunction - Cylinder 3
P0204 Injector Circuit Malfunction - Cylinder 4
P0205 Injector Circuit Malfunction - Cylinder 5
P0206 Injector Circuit Malfunction - Cylinder 6
P0207 Injector Circuit Malfunction - Cylinder 7
P0208 Injector Circuit Malfunction - Cylinder 8
P0209 Injector Circuit Malfunction - Cylinder 9
P0210 Injector Circuit Malfunction - Cylinder 10
P0211 Injector Circuit Malfunction - Cylinder 11
P0212 Injector Circuit Malfunction - Cylinder 12
P0213 Cold Start Injector 1 Malfunction
P0214 Cold Start Injector 2 Malfunction
P0215 Engine Shutoff Solenoid Malfunction
P0216 Injection Timing Control Circuit Malfunction
P0217 Engine Overtemp Condition
P0218 Transmission Over Temperature Condition
P0219 Engine Overspeed Condition
P0220 Throttle/Petal Position Sensor/Switch B Circuit Malfunction
P0221 Throttle/Petal Position Sensor/Switch B Circuit Range/Performance Problem
P0222 Throttle/Petal Position Sensor/Switch B Circuit Low Input
P0223 Throttle/Petal Position Sensor/Switch B Circuit High Input
P0224 Throttle/Petal Position Sensor/Switch B Circuit Intermittent
P0225 Throttle/Petal Position Sensor/Switch C Circuit Malfunction
P0226 Throttle/Petal Position Sensor/Switch C Circuit Range/Performance Problem
P0227 Throttle/Petal Position Sensor/Switch C Circuit Low Input
P0228 Throttle/Petal Position Sensor/Switch C Circuit High Input
P0229 Throttle/Petal Position Sensor/Switch C Circuit Intermittent
P0230 Fuel Pump Primary Circuit Malfunction
P0231 Fuel Pump Secondary Circuit Low
P0232 Fuel Pump Secondary Circuit High
P0233 Fuel Pump Secondary Circuit Intermittent
P0234 Engine Overboost Condition
P0235 Turbocharger Boost Sensor A Circuit Malfunction
P0236 Turbocharger Boost Sensor A Circuit Range/Performance
P0237 Turbocharger Boost Sensor A Circuit Low
P0238 Turbocharger Boost Sensor A Circuit High
P0239 Turbocharger Boost Sensor B Malfunction
P0240 Turbocharger Boost Sensor B Circuit Range/Performance
P0241 Turbocharger Boost Sensor B Circuit Low
P0242 Turbocharger Boost Sensor B Circuit High
P0243 Turbocharger Wastegate Solenoid A Malfunction
P0244 Turbocharger Wastegate Solenoid A Range/Performance
P0245 Turbocharger Wastegate Solenoid A Low
P0246 Turbocharger Wastegate Solenoid A High
P0247 Turbocharger Wastegate Solenoid B Malfunction
P0248 Turbocharger Wastegate Solenoid B Range/Performance
P0249 Turbocharger Wastegate Solenoid B Low
P0250 Turbocharger Wastegate Solenoid B High
P0251 Injection Pump Fuel Metering Control "A" Malfunction (Cam/Rotor/Injector)
P0252 Injection Pump Fuel Metering Control "A" Range/Performance (Cam/Rotor/Injector)
P0253 Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)
P0254 Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector)
P0255 Injection Pump Fuel Metering Control "A" Intermittent (Cam/Rotor/Injector)
P0256 Injection Pump Fuel Metering Control "B" Malfunction (Cam/Rotor/Injector)
P0257 Injection Pump Fuel Metering Control "B" Range/Performance (Cam/Rotor/Injector)
P0258 Injection Pump Fuel Metering Control "B" Low (Cam/Rotor/Injector)
P0259 Injection Pump Fuel Metering Control "B" High (Cam/Rotor/Injector)
P0260 Injection Pump Fuel Metering Control "B" Intermittent (Cam/Rotor/Injector)

 

[Mid_lfe_Crisis]

part 3
P0261 Cylinder 1 Injector Circuit Low
P0262 Cylinder 1 Injector Circuit High
P0263 Cylinder 1 Contribution/Balance Fault
P0264 Cylinder 2 Injector Circuit Low
P0265 Cylinder 2 Injector Circuit High
P0266 Cylinder 2 Contribution/Balance Fault
P0267 Cylinder 3 Injector Circuit Low
P0268 Cylinder 3 Injector Circuit High
P0269 Cylinder 3 Contribution/Balance Fault
P0270 Cylinder 4 Injector Circuit Low
P0271 Cylinder 4 Injector Circuit High
P0272 Cylinder 4 Contribution/Balance Fault
P0273 Cylinder 5 Injector Circuit Low
P0274 Cylinder 5 Injector Circuit High
P0275 Cylinder 5 Contribution/Balance Fault
P0276 Cylinder 6 Injector Circuit Low
P0277 Cylinder 6 Injector Circuit High
P0278 Cylinder 6 Contribution/Balance Fault
P0279 Cylinder 7 Injector Circuit Low
P0280 Cylinder 7 Injector Circuit High
P0281 Cylinder 7 Contribution/Balance Fault
P0282 Cylinder 8 Injector Circuit Low
P0283 Cylinder 8 Injector Circuit High
P0284 Cylinder 8 Contribution/Balance Fault
P0285 Cylinder 9 Injector Circuit Low
P0286 Cylinder 9 Injector Circuit High
P0287 Cylinder 9 Contribution/Balance Fault
P0288 Cylinder 10 Injector Circuit Low
P0289 Cylinder 10 Injector Circuit High
P0290 Cylinder 10 Contribution/Balance Fault
P0291 Cylinder 11 Injector Circuit Low
P0292 Cylinder 11 Injector Circuit High
P0293 Cylinder 11 Contribution/Balance Fault
P0294 Cylinder 12 Injector Circuit Low
P0295 Cylinder 12 Injector Circuit High
P0296 Cylinder 12 Contribution/Range Fault
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0305 Cylinder 5 Misfire Detected
P0306 Cylinder 6 Misfire Detected
P0307 Cylinder 7 Misfire Detected
P0308 Cylinder 8 Misfire Detected
P0309 Cylinder 9 Misfire Detected
P0311 Cylinder 11 Misfire Detected
P0312 Cylinder 12 Misfire Detected
P0320 Ignition/Distributor Engine Speed Input Circuit Malfunction
P0321 Ignition/Distributor Engine Speed Input Circuit Range/Performance
P0322 Ignition/Distributor Engine Speed Input Circuit No Signal
P0323 Ignition/Distributor Engine Speed Input Circuit Intermittent
P0325 Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor) P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0329 Knock Sensor 1 Circuit Intermittent (Bank 1 or Single Sensor)
P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)
P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
P0333 Knock Sensor 2 Circuit High Input (Bank 2)
P0334 Knock Sensor 2 Circuit Intermittent (Bank 2)
P0335 Crankshaft Position Sensor A Circuit Malfunction
P0336 Crankshaft Position Sensor A Circuit Range/Performance
P0337 Crankshaft Position Sensor A Circuit Low Input
P0338 Crankshaft Position Sensor A Circuit High Input
P0339 Crankshaft Position Sensor A Circuit Intermittent
P0340 Camshaft Position Sensor Circuit Malfunction
P0341 Camshaft Position Sensor Circuit Range/Performance
P0342 Camshaft Position Sensor Circuit Low Input
P0343 Camshaft Position Sensor Circuit High Input
P0344 Camshaft Position Sensor Circuit Intermittent
P0350 Ignition Coil Primary/Secondary Circuit Malfunction
P0351 Ignition Coil A Primary/Secondary Circuit Malfunction
P0352 Ignition Coil B Primary/Secondary Circuit Malfunction
P0353 Ignition Coil C Primary/Secondary Circuit Malfunction
P0354 Ignition Coil D Primary/Secondary Circuit Malfunction
P0355 Ignition Coil E Primary/Secondary Circuit Malfunction
P0356 Ignition Coil F Primary/Secondary Circuit Malfunction
P0357 Ignition Coil G Primary/Secondary Circuit Malfunction
P0358 Ignition Coil H Primary/Secondary Circuit Malfunction
P0359 Ignition Coil I Primary/Secondary Circuit Malfunction
P0360 Ignition Coil J Primary/Secondary Circuit Malfunction
P0361 Ignition Coil K Primary/Secondary Circuit Malfunction
P0362 Ignition Coil L Primary/Secondary Circuit Malfunction
P0370 Timing Reference High Resolution Signal A Malfunction
P0371 Timing Reference High Resolution Signal A Too Many Pulses
P0372 Timing Reference High Resolution Signal A Too Few Pulses
P0373 Timing Reference High Resolution Signal A Intermittent/Erratic Pulses
P0374 Timing Reference High Resolution Signal A No Pulses
P0375 Timing Reference High Resolution Signal B Malfunction
P0376 Timing Reference High Resolution Signal B Too Many Pulses
P0377 Timing Reference High Resolution Signal B Too Few Pulses
P0378 Timing Reference High Resolution Signal B Intermittent/Erratic Pulses
P0379 Timing Reference High Resolution Signal B No Pulses
P0380 Glow Plug/Heater Circuit "A" Malfunction
P0381 Glow Plug/Heater Indicator Circuit Malfunction
P0382 Exhaust Gas Recirculation Flow Malfunction
P0385 Crankshaft Position Sensor B Circuit Malfunction
P0386 Crankshaft Position Sensor B Circuit Range/Performance
P0387 Crankshaft Position Sensor B Circuit Low Input
P0388 Crankshaft Position Sensor B Circuit High Input
P0389 Crankshaft Position Sensor B Circuit Intermittent
P0400 Exhaust Gas Recirculation Flow Malfunction
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
P0402 Exhaust Gas Recirculation Flow Excessive Detected
P0403 Exhaust Gas Recirculation Circuit Malfunction
P0404 Exhaust Gas Recirculation Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor A Circuit Low
P0406 Exhaust Gas Recirculation Sensor A Circuit High
P0407 Exhaust Gas Recirculation Sensor B Circuit Low
P0408 Exhaust Gas Recirculation Sensor B Circuit High
P0410 Secondary Air Injection System Malfunction
P0411 Secondary Air Injection System Incorrect Flow Detected
P0412 Secondary Air Injection System Switching Valve A Circuit Malfunction
P0413 Secondary Air Injection System Switching Valve A Circuit Open
P0414 Secondary Air Injection System Switching Valve A Circuit Shorted
P0415 Secondary Air Injection System Switching Valve B Circuit Malfunction
P0416 Secondary Air Injection System Switching Valve B Circuit Open
P0417 Secondary Air Injection System Switching Valve B Circuit Shorted
P0418 Secondary Air Injection System Relay "A" Circuit Malfunction
P0419 Secondary Air Injection System Relay "B" Circuit Malfunction

 

[Mid_lfe_Crisis]

part 4
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424 Heated Catalyst Temperature Below Threshold (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)
P0434 Heated Catalyst Temperature Below Threshold (Bank 2)
P0440 Evaporative Emission Control System Malfunction
P0441 Evaporative Emission Control System Incorrect Purge Flow
P0442 Evaporative Emission Control System Leak Detected (small leak)
P0443 Evaporative Emission Control System Purge Control Valve Circuit Malfunction
P0444 Evaporative Emission Control System Purge Control Valve Circuit Open
P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0447 Evaporative Emission Control System Vent Control Circuit Open
P0448 Evaporative Emission Control System Vent Control Circuit Shorted
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
P0450 Evaporative Emission Control System Pressure Sensor Malfunction
P0451 Evaporative Emission Control System Pressure Sensor Range/Performance
P0452 Evaporative Emission Control System Pressure Sensor Low Input
P0453 Evaporative Emission Control System Pressure Sensor High Input
P0454 Evaporative Emission Control System Pressure Sensor Intermittent
P0455 Evaporative Emission Control System Leak Detected (gross leak)
P0460 Fuel Level Sensor Circuit Malfunction
P0461 Fuel Level Sensor Circuit Range/Performance
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0464 Fuel Level Sensor Circuit Intermittent
P0465 Purge Flow Sensor Circuit Malfunction
P0466 Purge Flow Sensor Circuit Range/Performance
P0467 Purge Flow Sensor Circuit Low Input
P0468 Purge Flow Sensor Circuit High Input
P0469 Purge Flow Sensor Circuit Intermittent
P0470 Exhaust Pressure Sensor Malfunction
P0471 Exhaust Pressure Sensor Range/Performance
P0472 Exhaust Pressure Sensor Low
P0473 Exhaust Pressure Sensor High
P0474 Exhaust Pressure Sensor Intermittent
P0475 Exhaust Pressure Control Valve Malfunction
P0476 Exhaust Pressure Control Valve Range/Performance
P0477 Exhaust Pressure Control Valve Low
P0478 Exhaust Pressure Control Valve High
P0479 Exhaust Pressure Control Valve Intermittent
P0480 Cooling Fan 1 Control Circuit Malfunction
P0481 Cooling Fan 2 Control Circuit Malfunction
P0482 Cooling Fan 3 Control Circuit Malfunction
P0483 Cooling Fan Rationality Check Malfunction
P0484 Cooling Fan Circuit Over Current
P0485 Cooling Fan Power/Ground Circuit Malfunction
P0500 Vehicle Speed Sensor Malfunction
P0501 Vehicle Speed Sensor Range/Performance
P0502 Vehicle Speed Sensor Low Input
P0503 Vehicle Speed Sensor Intermittent/Erratic/High
P0505 Idle Control System Malfunction
P0506 Idle Control System RPM Lower Than Expected
P0507 Idle Control System RPM Higher Than Expected
P0510 Closed Throttle Position Switch Malfunction
P0520 Engine Oil Pressure Sensor/Switch Circuit Malfunction
P0521 Engine Oil Pressure Sensor/Switch Circuit Range/Performance
P0522 Engine Oil Pressure Sensor/Switch Circuit Low Voltage
P0523 Engine Oil Pressure Sensor/Switch Circuit High Voltage
P0530 A/C Refrigerant Pressure Sensor Circuit Malfunction
P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance
P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
P0533 A/C Refrigerant Pressure Sensor Circuit High Input
P0534 Air Conditioner Refrigerant Charge Loss
P0550 Power Steering Pressure Sensor Circuit Malfunction
P0551 Power Steering Pressure Sensor Circuit Range/Performance
P0552 Power Steering Pressure Sensor Circuit Low Input
P0553 Power Steering Pressure Sensor Circuit High Input
P0554 Power Steering Pressure Sensor Circuit Intermittent
P0560 System Voltage Malfunction
P0561 System Voltage Unstable
P0562 System Voltage Low
P0563 System Voltage High
P0565 Cruise Control On Signal Malfunction
P0566 Cruise Control Off Signal Malfunction
P0567 Cruise Control Resume Signal Malfunction
P0568 Cruise Control Set Signal Malfunction
P0569 Cruise Control Coast Signal Malfunction
P0570 Cruise Control Accel Signal Malfunction
P0571 Cruise Control/Brake Switch A Circuit Malfunction
P0572 Cruise Control/Brake Switch A Circuit Low
P0573 Cruise Control/Brake Switch A Circuit High
P0574 Cruise Control Related Malfunction
P0575 Cruise Control Related Malfunction
P0576 Cruise Control Related Malfunction
P0576 Cruise Control Related Malfunction
P0578 Cruise Control Related Malfunction
P0579 Cruise Control Related Malfunction
P0580 Cruise Control Related Malfunction
P0600 Serial Communication Link Malfunction
P0601 Internal Control Module Memory Check Sum Error
P0602 Control Module Programming Error
P0603 Internal Control Module Keep Alive Memory (KAM) Error
P0604 Internal Control Module Random Access Memory (RAM) Error
P0605 Internal Control Module Read Only Memory (ROM) Error
P0606 PCM Processor Fault
P0608 Control Module VSS Output "A" Malfunction
P0609 Control Module VSS Output "B" Malfunction
P0620 Generator Control Circuit Malfunction
P0621 Generator Lamp "L" Control Circuit Malfunction
P0622 Generator Field "F" Control Circuit Malfunction
P0650 Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
P0654 Engine RPM Output Circuit Malfunction
P0655 Engine Hot Lamp Output Control Circuit Malfucntion
P0656 Fuel Level Output Circuit Malfunction
P0700 Transmission Control System Malfunction
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System Electrical
P0703 Torque Converter/Brake Switch B Circuit Malfunction
P0704 Clutch Switch Input Circuit Malfunction
P0705 Transmission Range Sensor Circuit malfunction (PRNDL Input)
P0706 Transmission Range Sensor Circuit Range/Performance
P0707 Transmission Range Sensor Circuit Low Input
P0708 Transmission Range Sensor Circuit High Input
P0709 Transmission Range Sensor Circuit Intermittent
P0710 Transmission Fluid Temperature Sensor Circuit Malfunction
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input
P0713 Transmission Fluid Temperature Sensor Circuit High Input
P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 Input/Turbine Speed Sensor Circuit Malfunction
P0716 Input/Turbine Speed Sensor Circuit Range/Performance
P0717 Input/Turbine Speed Sensor Circuit No Signal
P0718 Input/Turbine Speed Sensor Circuit Intermittent

 

[Mid_lfe_Crisis]

Last bit
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Speed Sensor Circuit Malfunction
P0721 Output Speed Sensor Range/Performance
P0722 Output Speed Sensor No Signal
P0723 Output Speed Sensor Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine Speed input Circuit Malfunction
P0726 Engine Speed Input Circuit Range/Performance
P0727 Engine Speed Input Circuit No Signal
P0728 Engine Speed Input Circuit Intermittent
P0730 Incorrect Gear Ratio
P0731 Gear 1 Incorrect ratio
P0732 Gear 2 Incorrect ratio
P0733 Gear 3 Incorrect ratio
P0734 Gear 4 Incorrect ratio
P0735 Gear 5 Incorrect ratio
P0736 Reverse incorrect gear ratio
P0740 Torque Converter Clutch Circuit Malfuction
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Circuit Stuck On P0743 Torque Converter Clutch Circuit Electrical
P0744 Torque Converter Clutch Circuit Intermittent
P0745 Pressure Control Solenoid Malfunction
P0746 Pressure Control Solenoid Performance or Stuck Off
P0747 Pressure Control Solenoid Stuck On
P0748 Pressure Control Solenoid Electrical
P0749 Pressure Control Solenoid Intermittent
P0750 Shift Solenoid A Malfunction
P0751 Shift Solenoid A Performance or Stuck Off
P0752 Shift Solenoid A Stuck On
P0753 Shift Solenoid A Electrical
P0754 Shift Solenoid A Intermittent
P0755 Shift Solenoid B Malfunction
P0756 Shift Solenoid B Performance or Stuck Off
P0757 Shift Solenoid B Stuck On
P0758 Shift Solenoid B Electrical
P0759 Shift Solenoid B Intermittent
P0760 Shift Solenoid C Malfunction
P0761 Shift Solenoid C Performance or Stuck Off
P0762 Shift Solenoid C Stuck On
P0763 Shift Solenoid C Electrical
P0764 Shift Solenoid C Intermittent
P0765 Shift Solenoid D Malfunction
P0766 Shift Solenoid D Performance or Stuck Off
P0767 Shift Solenoid D Stuck On
P0768 Shift Solenoid D Electrical
P0769 Shift Solenoid D Intermittent
P0770 Shift Solenoid E Malfunction
P0771 Shift Solenoid E Performance or Stuck Off
P0772 Shift Solenoid E Stuck On
P0773 Shift Solenoid E Electrical
P0774 Shift Solenoid E Intermittent
P0780 Shift Malfunction
P0781 1-2 Shift Malfunction
P0782 2-3 Shift Malfunction
P0783 3-4 Shift Malfunction
P0784 4-5 Shift Malfunction
P0785 Shift/Timing Solenoid Malfunction
P0786 Shift/Timing Solenoid Range/Performance
P0787 Shift/Timing Solenoid Low
P0788 Shift/Timing Solenoid High
P0789 Shift/Timing Solenoid Intermittent
P0790 Normal/Performance Switch Circuit Malfunction
P0801 Reverse Inhibit Control Circuit Malfunction
P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction


well someone asked for them :wink:

 

[philharve]

Hi Mid_Lfe_Crisis

Is this all the codes there are? Is there room for new ones?

REGARDS Phil

 

[996jimbo]

I have been reading about fault codes and one question keeps cropping up. I am not able to answer it myself but I'm hoping another member can. It is this. What kinds of faults are logged by the ECU and are they time & date stamped? In other words does the ECU keep a log (a diary) of faults recording when they occur, when they are cleared? Or are the faults logged with no time or date information ... as a list of fault codes?

When faults are remedied by the service technician are their fault codes automatically deleted by the the ECU or does the technicain have to reset them with a tool? I know that some fault codes have to be reset manually. Either way ... is the log is cleared?

REGARDS Phil

I have a '98 W202 which recently went in to my local specialist. With the keys I was also handed back a printout (about 10 pages) of all the fault codes that had been stored. Looking at that printout there is no time / date stamp on any faults - just a record of the fault. In order to diagnose a problem they cleared the fault memory, drove the car around and then checked again for faults. Presumably there's no guarantee that the ECU can accurately (or vaguely) know the time / date and therefore no point in building the information in to the fault logging procedure?

So far as whether the ECU automatically clears the fault log when they're fixed - the ECU doesn't know whether a fault is fixed, only that it did occur and whether it is still occurring. Therefore the fault log has to be 'manually' cleared. Having said all that, on my printout there seems to be some distinction between 'current' and 'stored'. Please note I am only talking from experince of mine.

The codes on my printout do not resemble Midlifecrisis' tome though I guess it's no surprise that as models are developed so fault codes are revised and revamped.

Having looked at my printout I would be interested in getting a fault code reader to monitor any faults myself. I would guess that even if I could get the hardware and software, though, it would be pretty expensive.

 

[philharve]

Hi 996jimbo

Ten pages of error codes! That sounds an awful lot of information. I wonder if this amount of data is typical during a service? I suppose it depends upon the condition of the vehicle.

I've had my Mercedes around 8 months and it hasn't missed a beat. It's a good reliable performer; no electrical bugs that I'm aware of. Maybe when I get my printout (if I'm presented with one) it'll indicate a host of minor, transient problems. If a fault clears, is that recorded too?

Thanks for letting me know that time information is not recorded along with the fault codes. I guess it is more important to record the fault rather than time at which it occurred. Pity, because time could be important in diagnosing a problem. I guess the ECU has no way of reading date & time information. However, it must record the passage of time in order for the ASSYST system to work.

I have seen several types of fault/error code reader ranging in price from a few tens of pounds to highly sophisticated, computerized models costing thousands.

I went in search of a fault code reader for my own use. I didn't want one that was dedicated to a particular make/type of car although this is possibly the cheapest of options. Neither did I want a reader that was so complex that it would require a PhD to operate. This type of reader is upgradable and can be used with a wide range of makes/types of vehicle. This is the tool for the service technician. Is there a more modestly priced reader, I thought?

Well, I got lucky. I set myself a budget of £150 and I found a solution. You will I find a thread elsewhere about it. See 'Workshop Manuals & Diagnostic Equipment' (Guy Greenwell). I included a picture of my solution with my commentary.

I am a PDA user and I have an IPAQ H5550 which I used for a multitude of uses including GPS navigation. I found I could also use it as a fault code reader. I bought special software from Autoenginuity which included a special diagnostic adapter which plugs into my car and my IPAQ. This equipment is software upgradable and will work with many makes/types of car. I now own a very sophisticated fault code reader and best of all it's portable, you can put it in your pocket or carry it in the car.

Of course, I already had an IPAQ which I didn't include in my budget. I paid about £120 for the software+adapter+shipping from America. There is even a Bluetooth option (I don't have) which enables the reader to be used whilst being driven. The IPAQ does have an onboard clock so it is possible to record errors and time stamp them. Oh, I almost forget ... the IPAQ translates error codes to English-type explanations so you don't have to carry around a heavy cross-reference book. You are not faced with the problem of looking up a 'P8010' error.

My fault code reader will also reset error codes. It's not just for displaying errors. It's more dynamic than that!

I am not sure of the significance of 'current' and 'stored' codes unless the information is used for tracking errors, e.g. do they repeat?

I have seen the list of error codes (or one very similar) to that Mid_Lfe_Crisis has produced. It can be found on the Internet and it can also be found in Haynes-type manuals. It's my understanding that the error codes can be extended to accommodate enhancements in motor vehicle technology.

If it would not be too much trouble would it be possible to include a sample from your printout or did the garage ask for the printout back?

REGARDS Phil

 

[996jimbo]

Warning - Serial interface to TWC G3/4m gurnied

Perhaps I should have qualified my "10 pages" claim a little - looking at the printout errors are recorded by certain modules and the format of my printout is one module per page. I'm on my first MB having had my first diagnostic and have never seen these printouts before so have no idea how typical my example is.

Most of the faults relate to low voltage which apparently threw up faults within most modules. Presumably therefore most if the faults are down to a dodgy battery at some time or another.

Phil - if you PM me with your email address I'll send a couple of pages as a pdf file.

Regards,
Jim

 

[philharve]

Info' on the Internet about OBD/OBDII

Hi All

Interested in knowing more about OBD.OBDII? Here are some URLs that may be of interest.

http://www.obdii.com/
http://obddiagnostics.com/
http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm
http://www.autoshop101.com/forms/h46.pdf
http://www.troublecodes.net/articles/obd2explained.shtml
http://www.txdps.state.tx.us/vi/publications/brochures/OBD_guide.pdf
http://www.nsxprime.com/FAQ/Miscellaneous/OBDII.htm
http://www.smogsite.com/obd2.html
http://www.overboost.com/story.asp?id=1286
http://www.amazon.com/gp/product/0971541159/102-2253489-4771340?v=glance&n=283155
http://www.obd-codes.com/
http://www.robisonservice.com/servicedep/merc_faults.asp
http://www.themotorbookstore.com/diagtroubcod.html
http://www.nology.com/pdfandzipfiles/obdiiconnectorlocations.pdf

Some a downloadable PDFs (portable document format).

REGARDS Phil

 

[junkray]

I have a 1998 MB and codes P0141 and P0136 came up recently and the county I live in failed the inspection on the car. I was thinking about repairing this myself. Does anyone know how much the parts are and is this a time consuming project. Thanks in advance for the assistance.

 

[nickcc101]

I have a 1998 MB and codes P0141 and P0136 came up recently and the county I live in failed the inspection on the car. I was thinking about repairing this myself. Does anyone know how much the parts are and is this a time consuming project. Thanks in advance for the assistance.

Not sure where you are but the code indicates the O2 sensor is u/s. You can buy new sensors off ebay for about £15 and these seem to work ok (i fitted a new sensor to my C180 W203 a few weeks ago). The car has just saied through the MOT test with lower emissions than previous test. The O2 sensors for the W203 C180 from MB cost about £150 each.

 

[ML 500 SAF]

Phil I have a small code reader approx. online £36.wouldent go any where without it in the glove box; it told me my cat was on it's way out, also maf sensor, ignition coil was playing up; all when I was out then on the way home drop off to pick my phoned order up of parts before it worsens.