engine diagnostics

Can anyone help me locate the oxygen sensors on a Mercedes vito w639? I have the engine diagnostic light on and heard this is the most common reason. Thanks in advance

As the title suggests, my Mercedes vito (55 plate) is causing no end of problems. I posted that the engine diagnostics light had been in and off over a period of 3 weeks. Monday this week, it can in while driving on an incline and accelerating. I took the van to be plugged in and read, and no...

The engine diagnostics light on my vito has been on and off a little over the past 3 weeks. No issues with performance until today. Light hadn’t been on all of last week except Friday afternoon. Got up to speed on a incline and the engine performance dipped and I’m guessing went into limp mode...

Well the title sums it up really 1998 E55 cuts out after start... Restarts fine Runs Ace So every 3rd time or so, I start the car from sitting - warm or cold - it will cut out. It can immediately be restarted and there are no other symptoms of any issue It surges down the road just fine...

The Engine Diagnostic Indicator of my C180 Kompressor/Blue Efficiency came on a couple of days ago. I went to a garage. The mechanic checked but found no problem. He reset it and said that if it came on again, it could be an indication the engine control unit might be faulty. That would be an...

Hi. Approx 18-24 months ago my engine management light kept coming on with a secondary air injection fault. The independent Merc garage I took it to tried replacing a relay and did some other checks but eventually replaced the pump which sorted it for a while. Last autumn there was a fault...

When accelerating in my auto the engine hickuped ane the engine diagnosis lamp came on, then the car started to run roughly. I stopped car and the engine was idling very unevenly. Swathed engine off then back on and it was fine, seemed to reset itself though the light stayed on. But if I...