Hi guys ive gt two cars vw polo and audi a4 both have the same problem epc light coming on only wen m driving i stop the car turn off engine and restart it, but it comes back especially on the audi

SOURCE: EPC Light.

change the EPC sensor, it will cost you only 100$

SOURCE: VW POLO-52 plate EPC light on dash

My Polo had a similar problem and the brake light switch at the brake pedal was replaced. Then the computer was reset and the EPC light issue was resolved. It has something to do with the engine management, when sensing the light switsh being activated, retarding the power of the engine.

SOURCE: 2002 Audi A4 Esp Light comes on, car turns off when I have to sto

I had the same issue with my '05 A4 1.8T.  Turns out it was the RPM sensor.  Audi tried to tell me it was teh fuel pump and the cam-shaft positioning sensor.  Paid for teh fuel pump replacement and it died 6 blocks from the dealership.  Then they replaced the RPM snesor, works great now... Except it's still an Audi.

SOURCE: I have a 2002 AUTO Audi A4. About 2 minutes into

Dear produceqa_de,

I am not entirely familliar with this particular model, although in some similar models that I have worked on The epc (on deisel models) usualy indicates a problem with the particle filter.

This means that if your car has a particle filter and it has not reached a temperature that it can clean itself for a few months, it may become clogged and cause a restriction for the engine.

If you take your car to an audi dealer the mechanic will be able to do a quick test to confirm and he may then be able to overide the cleaning process and clean the filter. I would advise that this is done asap as dammage may be caused from very high exhaust temperatures.

Reguards Luke.