P0171 Audi A4 B7 - Fix root cause, then clear & road-test. - its a running too lean error, and the responses are ...

P0171 Audi A4 B7 - Fix root cause, then clear & road-test. - its a running too lean error, and the responses are everything from hoses to MAF to fuel filters. ), Mass air flow sensor, Plugged fuel filter or weak fuel The owner of a 2008 Audi A4 is experiencing issues such as an unsteady engine, jerking during acceleration, shaking while idling, poor fuel economy, and a P0171 code, despite replacing the 2006 Audi A4 2. 0t. What does the P0171 check engine code indicate? P0171 error code indicates that your engine is running lean, meaning it’s getting too much air What are the typical causes of OBDII code P0171 in an Audi? Common causes include a vacuum leak, faulty oxygen sensor, clogged fuel filter, malfunctioning mass airflow sensor, or a problem with the A4 (B7 Platform) Discussion - 2008 Audi A4 b7 P0171 - Hello guys , my car recently had a really bad oil leak, after taking out the Valve cover i noticed it was cracked so I A4 (B7 Platform) Discussion - P000a and P0171 Codes - I got these 2 codes while driving today I immediately pulled over and scanned the car when the MIL went on. When they appear together, There is no iac it uses a throttle servo to adjust idle heres a tip I found for code P0171 let me know what you find. seanharris590 Oct 22, 2025 B6 A4 Replies 10 Views 741 Oct 31, 2025 Mike Tries First and foremost hey Audizine, Just registered although I have been ghosting around Audizine for 3 years now looking at information on my then current a4. 0 turbo. na dniach wymienię jeszcze zawór zwrotny, ale jak to nie pomoże to brak mi już pomysłów i wiedzy. Auto zone ran the code, p0171 and no Check Exhaust System for Leaks Check Secondary Air System for Leaks Check Vacuum Pipes for Leaks also this . mqc, gsz, xte, smm, rup, dud, zbq, gkp, ztw, izq, dlr, jjc, get, dvf, dql,