2001 E320cdi W210 EGR error code after replacement.

[Aerouk]

Replaced the tube and now EGR works, less smoke during acceleration, much better acceleration but still no boost. I still get ECU error when I push the kick-down switch. During scanning EGR readings start at 98% and with gas pedal pressed drops to 2%. The Idle air mass is 914 and when accelerate to 2500 it drops to 800, when going back to idle goes to 1100 and then drops to 914. Any suggestion?

 

[alexanderfoti]

when you say ECU error on kickdown, do you mean it logs a code, or something else?

 

[Aerouk]

when you say ECU error on kickdown, do you mean it logs a code, or something else?

EPC visit workshop. Didn't had the chance to connect it to the scanner. I will go to check what errors are stored in 2 hrs.

 

[Aerouk]

I did a scan. Attached images of Idle and 2700 rpm numbers. Attached the error codes also. I did a bypass (I have the suspicion that the white tube that connects the valve with the EGR and Turbo transducers is leaking. After The bypass with my tubes I don't get EGR error. Any suggestion?

 

[alexanderfoti]

No idea what boost pressure regulation means, It really needs manufacturer specific codes.

Pedal value sensor 1 is the cause of your EPC error and requires checking the wiring to the throttle sensor, but its most likely the sensor itself.

Boost pressure regulation - is your turbo transducer correct (they are different to the EGR ones), and do you have vaccum at the line to that transducer?

 

[Aerouk]

I replaced the Throttle sensor. What I noticed is that I get this code only when there is a problem with EGR or turbo. About vacuum, I get the same vacuum as with EGR that works. I used a bypass to be sure that vacuum is delivered. I believe that the turbo transducer is not working now. I replaced EGR transducer already. A0005450427 both have the same part number I believe.
I just ordered one. It will arrive on Friday. The other part could be the pressure sensor just after the EGR. Lets see how it will go wit the new transducer. The star equipped garage will have time for a scan next week. Hopefully the transducer will solve the problem. I will let you know how it went. Thank you very much for your assistance up to now.

 

[alexanderfoti]

If you have bypassed the trandsucer, then that is the cause of your boost regulation fault, the car is seing boost when it does not expect any.

You need to check the wiring to the pedal sensor then, or check on another diagonstics machine as the the fault definition may be wrong.

 

[alexanderfoti]

EGR and turbo transducers are not the same.

EGR A0005450427
Turbo - A0005450527

 

[Aerouk]

Thanks for this feedback. I ordered A0005450527.

 

[Aerouk]

If you have bypassed the trandsucer, then that is the cause of your boost regulation fault, the car is seing boost when it does not expect any.

You need to check the wiring to the pedal sensor then, or check on another diagonstics machine as the the fault definition may be wrong.

when connected to star there wasn't error. The mechanic said that this was due to EGR problem meshing with everything. When I replaced the EGR transducer I could press the kickdown switch with out getting the error of pedal sensor.

Do you have the wiring drawings? what should I test?
Didn't bypass the transducer. just used new tubes.

 

[mattkh]

I learnt recently that temperature of the combustion gases is also a parameter in the EGR system.
In your case I do not know which sensor's reading the ECU will be using.

 

[Aerouk]

Installed the turbo transducer today and no boost sensor error during first test. Turbo again not engaged although I thought that I heard the whistling sound few times. The only error I get is P1222 pedal value sensor sensor 1. Any suggestion? what should I check on wiring? I tried to find schematics but no luck. I noticed when I press the gas pedal up to the middle the acceleration is great when I pass a certain point above the middle then I get deceleration or just freezing at the speed where I was.

 

[alexanderfoti]

Installed the turbo transducer today and no boost sensor error during first test. Turbo again not engaged although I thought that I heard the whistling sound few times. The only error I get is P1222 pedal value sensor sensor 1. Any suggestion? what should I check on wiring? I tried to find schematics but no luck. I noticed when I press the gas pedal up to the middle the acceleration is great when I pass a certain point above the middle then I get deceleration or just freezing at the speed where I was.

OK great, sounds like your only remaining problem is the throttle pedal sensor fault. Unfortunately, I cannot post up any diagrams, but its common enough, that I would just replace the sensor (second hand off ebay should do!) and take it from there.