HI.I JUST BOUGHT A USED AUDI TT 88000 MILES.WEEK BEFORE CHECK ENGINE L CAME ON CODE P0171SYSTEM TO LEAN BANK1.EXHAUST SYST-FUEL PRESSOR REGULATOR-INTAKE SYST-OXEGENESENS-VACUUM LINE-SECONDARY AIR INJECTION SYST.I NEED SOME ADVICE WHAT THE CAUSE THIS CODE MIGHT BE.WHAT TO PUCHASE?THANK YOU
Audi Q&AAsk Your Question
2002 Audi TT Quattro Question: CHECK ENGIN LIGHT ON
Answer #1DadsTT October 04, 2010, 18:10Rookie
Tomi, Do not know exactly what the code means, but I have a 2008 TT and got a couple check engine lights in my 60,000 miles... When that light comes on, it is a good warning to get it checked by a certified mechanic or your local Audi dealership service department. My last check engine light had to do with a faulty diverter valve rupture, thereby, not giving me turbo boost. I have had three Audis in the last 8 or so years and just know this is a sign that can mean many things, and it is better to not drive the car and get it fixed ASAP. Tell me how it goes.