DTC P0171 and P0174 Too Lean
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Three Wheeling
Joined: Mar 2010
Posts: 87
Likes: 3
From: Temecula, CA
DTC P0171 and P0174 Too Lean
Hello,
I just received these codes the other day. I checked for any leaks but didn't find any. I could hear the PCV air flowing but no leaks. Two years ago I replaced the PCV and MASS for p0171. Now two codes are present. Time for a new MASS again or ...
Some logs from IID tool. What do you all think?
I just received these codes the other day. I checked for any leaks but didn't find any. I could hear the PCV air flowing but no leaks. Two years ago I replaced the PCV and MASS for p0171. Now two codes are present. Time for a new MASS again or ...
Some logs from IID tool. What do you all think?
Rock Crawling
Joined: Aug 2008
Posts: 343
Likes: 34
Lean codes could mean anything...
Check for any leaks on harmonic air intake, air filter screws, O straps,oil cap and believe tr or not , dipstick's o ring.OnLR3 MAF sensor is usually associated with PO101 code.
Check for any leaks on harmonic air intake, air filter screws, O straps,oil cap and believe tr or not , dipstick's o ring.OnLR3 MAF sensor is usually associated with PO101 code.
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