Engine codes help me!
Thread Starter
Audiworld Junior Member
Joined: Jun 2017
Posts: 13
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Engine codes help me!
I replaced my o2 sensor already cleaned my MAF sensor (haven't bought a new one might be my next try) but I keep getting the p0420 and p0171 engine codes. How do I get rid of and fix these?
AudiWorld Super User
Joined: Jan 2006
Posts: 6,310
Likes: 123
From: Las Vegas, Nevada USA
If you're not using the Ross-Tech interface or the high-priced dealer type diagnostic equipment, those codes can be misleading. Very misleading with undefined results.
You'll need the wiring diagram to trace wires from sensors to modules as part of standard electrical troubleshooting techniques.
Buy them.
You'll need the wiring diagram to trace wires from sensors to modules as part of standard electrical troubleshooting techniques.
Buy them.
Thread Starter
Audiworld Junior Member
Joined: Jun 2017
Posts: 13
Likes: 0
If you're not using the Ross-Tech interface or the high-priced dealer type diagnostic equipment, those codes can be misleading. Very misleading with undefined results.
You'll need the wiring diagram to trace wires from sensors to modules as part of standard electrical troubleshooting techniques.
Buy them.
You'll need the wiring diagram to trace wires from sensors to modules as part of standard electrical troubleshooting techniques.
Buy them.
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