Dtc P0171
C'mon, man! Row yer own.
Joined: Jun 2005
Posts: 1,210
Likes: 0
From: WDMIA
Originally Posted by PACman
Hey guys, CEL checked, and I'm getting P0171 (system too lean). Any thoughts were to look to fix this?
Just one of many possibilities, but bear it in mind. He replaced MAP sensor, O2 sensor, and finally narrowed it down to the fuel press reg. Good luck!
Thread Starter
Drifting
Joined: Oct 2003
Posts: 2,068
Likes: 21
From: SoCal
Originally Posted by peter_bigblock
FWIW, my brother has a '99 Accord 4cyl and was dogged for more than a year tracking down the culprit of a CEL with this code. It turned out his fuel pressure regulator was bad/clogged/whatever. He replaced it and now no CEL, runs terrific, etc. Does your car run rough or hesitate at higher rpms?
Just one of many possibilities, but bear it in mind. He replaced MAP sensor, O2 sensor, and finally narrowed it down to the fuel press reg. Good luck!
Just one of many possibilities, but bear it in mind. He replaced MAP sensor, O2 sensor, and finally narrowed it down to the fuel press reg. Good luck!
C'mon, man! Row yer own.
Joined: Jun 2005
Posts: 1,210
Likes: 0
From: WDMIA
Originally Posted by PACman
Yea, sometimes the car runs rough while cruising, and even at times accelerating.
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