Chrisk76

Hi. I did. Throttle body was replaced, and then the throttle pedal. Neither did the job. Had the wiring replaced between the throttle body and the ECU and the problem was fixed. I’m light on details but the garage said there were five wires involved and they did all of them because the main cost was labour, so it was better to just do all at the same time than keep going back one at a time.

And spoke too soon. Error light is back. Throttle/pedal position sensor/switch "B" circuit range/performance Aaaaaargh

Well, it's been a week, and still no light, so it's starting to look like that was the problem. I do still have a 'dead' spot in the accelerator pedal though. Obviously I've not measured the distances, but it seems that the first cm or so of travel elicits a throttle response, and then the next cm or so is flat - no additional acceleration, and then beyond that it's all good. So, I suspect it still needs a trip to the garage, but thanks to your previous response, at least I won't be paying to have the throttle body adapted!

Well, I ran the adaptation last night, and have been for a drive today. For sure the throttle response is massively better than it was, and no light. However, it was sometimes going a week without showing so time will tell. Will let you know 🤞🏼

Hi - thanks for the info. I have a Carista OBD device so I’ll try the adaptation using that. I checked online and it supports that functionality. Fingers crossed!

Hi - thanks for the reply. To the best of my knowledge, they “reset the ECU by disconnecting the battery/sensor for a few minutes”. Basically, they weren’t overly reassuring about having done much. All they could tell me was they looked at the values from it and they were what they expected… I feel somewhat reassured though now, that it’s either not been adapted (is that calibrated?) or that the pedal sensor needs replacing. (Quote marks as I doubt very much that what they did was correct, however it’s what they said!)

Hi all. For a long while, I was getting the EPC light intermittently appear on my 2013 A3 8V. Scanning revealed it was throttle position sensor B at fault. My local garage said it was fine to leave, but that it would get worse. It got worse. They replaced the throttle body, however the issue remains with the same fault code. Unfortunately for me they have now declared it beyond their ability to fix, so I’m waiting to take my car to an Audi specialist. When driving, it can be ok for a week, and then the light can appear every journey. There’s no consistency. However even when the light isn’t on, there’s what feels like a ‘dead spot’ in the throttle response. I don’t know how else to describe it other than if you slowly increase the pressure on the accelerator, the car speeds up except at some point it suddenly feels as though you press slightly harder on the pedal but nothing happens, or there is a slight loss in power. Any ideas on what could be causing this? For what it’s worth, the garage assured me it was a genuine Audi part that they fitted.