Description
Troubles with 2003 Audi A4 Quattro 1.8 turbo
Two check engine codes keep coming up:
P0420 efficiency below threshold - Bank1
P0411 AIR System Incorrect Flow Detected code
Car is running and idling great. Diverter valve was just replaced. O2 sensor was just replaced.
Also I recently recharged my AC, but heat seems to not be working again, so I think there's a leak. Let me know if you have the tools to find that kind of leak.
Plates are expired and I need to get everything fixed up again so I can get through DEQ. Just clearing the codes will not help me get through DEQ, need to actually fix the problem. You're going to need a scanner.
If you are interested, send me an email with your information, including what part of the city you're in, **what you charge per hour** and how much experience you have with German cars.
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