I need help! P0171 CEL on my infiniti G20 any ideas?
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Da Brit.
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Joined: Feb 2008
Posts: 2,811
From: Bay Area, CA
Car Info: http://tinyurl.com/3vo4362
I need help! P0171 CEL on my infiniti G20 any ideas?
Motor:
SR20-DE 2.0L 4 cyl
Symptoms:
CEL (MIL) P0171 bank 1 lean
Long term trim +14 at idle
Long term trim +34 under load
Never had idle issue
Never had warm or cold start issues.
I've tried everything I can think of and the light keeps coming back.*
Action taken:
Looked for cracked hoses.
New Upstream o2
New Downstream o2
New Fuel filter
New Air filter
New Spark plugs (Ngk same as dealer)
New Pcv
Techron Fuel treatment to clean injectors
Tightened gas cap just in case evap is an issue
Replaced Exhaust manifold gasket replaced while chasing down egr tube leak
New Egr tube - was cracked at flange
Cleaned MAF with MAF cleaner
Usual causes:
Vacuum leak, fuel delivery(clogged fuel filter or injectors), exhaust leak, bad o2 sensors, bad MAF.
Last edited by johndabrit; May 28, 2013 at 09:45 AM.
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woocabin
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Jul 20, 2011 07:26 PM
