P1129 Audi -

Question

I got this code 2 weeks after replacing an auxillary water pump which was under my intank manifold. I may have plugged something in the wrong plug or something. Is there any diagram i have a 2.7t 2001 audi a6. My muffler sounds loud like something is disconnected on a cold start but goes away after 5 minutes. Also got p1127 code.

Answer 1

P1129 Long term fuel trim Bank 2 system too rich

P1127 Long term fuel trim Bank 1 system too rich

Being a turbo check for vacuum leaks especially at the intake, that or the MAF air duct is not secured, This is not going to be with the EGT or 02 sensor unless you left the earth wire for the EGT unsecured. There are vacuum  hose  that you have to remove or disconnect in order to get to the auxillary water pump. something  not on right  especially when it affects the exhuast when you start up.There a hose that goes to the turbo intake if that out sure enough you code a rich fuel trim.or with the pressure pipes

Here are the step you would of taken only some are shown.

 The airduct

you would have to remove the ground wire for the exhaust temp.

The turbo charge intake side

the crankcase hose.