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After owning my 2006 RS4 with 50k on it for 6 months , not a hint of a problem, car is a dream and definitely a keeper.

Started her up this morning and found the EPC/ESP Lights on, drives perfectly , no noises etc?

Any suggestions on what this could be?

Many thanks

I once had this light show my fault was steering angle sensor

But it could be one of many sensors related to the stability program of the car

Needs scanning



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Is this an Audi diagnostic job?

My local is Audi cribs causeway ( Bristol)

MrRSB7 wrote:Is this an Audi diagnostic job?

My local is Audi cribs causeway ( Bristol)

No most mechanics will have the correct diagnostic tools

Possibly a member your way could help ?


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MrRSB7 wrote:After owning my 2006 RS4 with 50k on it for 6 months , not a hint of a problem, car is a dream and definitely a keeper.

Started her up this morning and found the EPC/ESP Lights on, drives perfectly , no noises etc?

Any suggestions on what this could be?

Many thanks

I got this also this week, did you run a diagnostic tool to see what code you have? Surprised it drives perfectly, my power got limited to 3k revs, in the end it came up after driving through heavy rain, after a while it went away, have to check a few things around the ECU to see what might have got wet. For reference the codes that I got were 2128 and 2138...


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No , I have no diagnostic tool, I’ll try and find a local indi to plug her up

MrRSB7 wrote:No , I have no diagnostic tool, I’ll try and find a local indi to plug her up

Ok, worth investing in a cheap one, I bought a 20$ one at a local autostore. Also ODB11 is a good tool to have if you have an android phone


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This sounds like a throttle body problem. I had exactly the same issue. The car drives perfectly, then it goes into limp mode. You switch the car off and its ok for a while then the issue repeats. My car had done about 70k at the time. A new throttle body is about £1300 fitted Audi.

Covkiller wrote:This sounds like a throttle body problem. I had exactly the same issue. The car drives perfectly, then it goes into limp mode. You switch the car off and its ok for a while then the issue repeats. My car had done about 70k at the time. A new throttle body is about £1300 fitted Audi.

Crazy expensive when its the same throtthe body as the Corvette C6 Z06, you can buy those too off Rockauto for half or less than what the audi stamped (exact part number) one costs...


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Thats good news