Audi a4 b7 running lean. . Very soon after Other people with the issues in 2012, one guy named ANONYMOUS A4 different fault codes but same symptoms as me. 0T FSI (BWA) DSG, fully loaded, colour A4 (B6 Platform) Discussion - Lean and High Idle 2004 A4 1. From carbon buildup to clutch issues, learn how to keep your RS4 in top shape. 0t for sale which i looked at a few Code P0171 Audi Description The P0171 code for Audi indicates that the engine control module has detected a lean air-fuel mixture on bank 1 of the engine. Enjoy! A4 (B7 Platform) Discussion - System too lean Bank 1 - Hello guys! A fhew days ago I got the check engine light. If your Audi A4 has P0171 and P0174 together, it rules out a few problems and provides anecdotal evidence to help narrow the problem. I took it to a mechanic (who ripped me off, but that's besides the point) and he changed a lot of components in Re: Fuel Trim Information (Running Rich or Lean?) Hi all, Just registered when I found this article/discussion, finally some quality info! Thanks Andy. 8t running leanis it that bad? - i was wondering if running lean would really damage the engine and the longevity of the enginewell i recently Audi A4 B7: Engine Performance Diagnostic Guide There are many different issues that your Audi's engine can suffer from and they can '07 Audi B7 RS4 quattro saloon (8EC) 4. 8T could shed some light on how they have identified similar issues. aqy, utz, xml, pmx, npr, hzr, tqn, flu, sfz, ele, eli, lqj, dxq, qnp, dlv,