OEM codes/troubleshooting
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1st Gear
Joined: Jun 2007
Posts: 22
From: San Francisco, CA
OEM codes/troubleshooting
Recently my Audi (2001,A4, 1.8T,65,000 miles) has been having problems. It just shuts off in the middle of my driving.
I went to Autozone this morning for a code diagnosis/troubleshooting and they gave me these codes:
P0130
P0171
Can someone please tell me what they mean or what may be wrong with my car?
How much would it approx cost to repair? Can I take it to the dealer for repair?
I suspect it is a bad MAF and/or a dirty throttle body. Someone suggested a vacuum leak.
Please advise.
Thank you.
I went to Autozone this morning for a code diagnosis/troubleshooting and they gave me these codes:
P0130
P0171
Can someone please tell me what they mean or what may be wrong with my car?
How much would it approx cost to repair? Can I take it to the dealer for repair?
I suspect it is a bad MAF and/or a dirty throttle body. Someone suggested a vacuum leak.
Please advise.
Thank you.
Administrator
Joined: Jul 2006
Posts: 11,670
From: Binghamton, NY
RE: OEM codes/troubleshooting
P0130-02 sensor bank1 sensor 1
P0171 = system too lean, bank 1
Likely an O2 sensor, which you can change yourself. The sensors are available for big bucks at the dealership, or for probably quite a bit less at PureMS.com or ECSTuning.com. Sensor 1 is the pre-cat O2 sensor, and bank 1 should be passenger side. There are other reasons you could get the code (air in the system due to a leak, AIR system, MAF sensor, fuel pressure/pump, injector(s) leaking. Could be a vacuum leak in the system or a MAF problem, but since you're getting the O2 sensor code as well, I'd lean that way. You could swap that with the sensor on the other side, clear the codes, then fire it up and see if you get codes for bank 2 sensor 1 and system too lean, bank 2. If so, that'd bullseye the O2 sensor.
P0171 = system too lean, bank 1
Likely an O2 sensor, which you can change yourself. The sensors are available for big bucks at the dealership, or for probably quite a bit less at PureMS.com or ECSTuning.com. Sensor 1 is the pre-cat O2 sensor, and bank 1 should be passenger side. There are other reasons you could get the code (air in the system due to a leak, AIR system, MAF sensor, fuel pressure/pump, injector(s) leaking. Could be a vacuum leak in the system or a MAF problem, but since you're getting the O2 sensor code as well, I'd lean that way. You could swap that with the sensor on the other side, clear the codes, then fire it up and see if you get codes for bank 2 sensor 1 and system too lean, bank 2. If so, that'd bullseye the O2 sensor.
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