My 2004 Audi S4 4.2L CEL came on this weekend the codes are p0174 and p0175 system to rich bank 1 and 2. Check air filter and it looks clean, could this be a Mass airflow sensor? What should be my plan of attach or simply just take it into the shop?


Repair costs

The light remained on after starting the car. Nothing is obviously wrong that I can hear or feel. Is ok to drive locally until I can get it looked at after the holiday weekend or do I need to keep it parked?

Just had my secondary radiator replaced on S4 (2005). The car didnt start at the dealers (left overnight after work). Now it wont start in the morning, and doesn't seem to charge up when running the car in the day. So confused whats causing the problem. The battery wasnt disconnected during the radiator work.. Any advice?

my car was purchased new and is under 21,000 miles

malfunction indicator light on in my 2005 Audi S4. I noticed becaused at a stop it started running rough (shaking engine)? Is this going to be expensive? Can I fix the problem myself to avoid high labor costs?

Audi says nothing is wrong, one mechanic said its the bearings. Does anyone at Audi know anything about their cars.