Hey my name is Mike, I’m new to the forums and I gotta say that you all have already been a big help, it seems like a really great community. I just bought a 2003 Audi A3 2.7t 6-speed with 107,000 miles. It just had the timing belt and water pump replaced, has a brand new clutch, brakes, tires, wheels and has always had regular maintenance done on it (I have the service records). He also got one of the o2 sensors replaced recently. I’ve only had the car for about 4 days now, and I started to notice a lack of power over 3800 rpm and what seemed like a misfire at idle, so I bought a Vag-Com cable and got these fault codes:
P1458: EGT Sensor 2 Short to Ground
P1555: Charge Pressure Upper Limit Exceeded
P0300: Random Cylinder Misfire
P0303
P0306
P1461: EGT Control Bank 1 Range/Performance

I logged some data, and there was a lot of misfires on cylinders 2,3,4.

So my question is, are any of these related, and if so what is the common fix? Sounds to me like I need to replace a EGT Sensor, but I’m new to these turbo cars. Also I was under the impression that this car wasn’t chipped, but the P1555 leads me to believe otherwise, any suggestions?

Thanks,
Mike

 

Mine is chipped and I never had that code. One way to tell if it is chipped is drive it faster than 133 mph -- stock is electronically governed. The misfire codes could be due to failing coilpacks. A couple years ago there was a TSB for replacing them (not a recall). I brought my A4 and A6s in and the local dealer said it did not apply. Then last month, at 190k, a coilpack failed on my A6 and when I took it to another dealer they looked it up, told me the coilpacks were covered under the TSB, and replaced them all under warranty. I cannot upload the TSB but email me at jjaiven@chartermi.net if you want a copy.

 

Hey thanks a bunch. I just sent you an email. Thanks for the advice