PCV Valve Question.

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06-25-13 | 06:40 PM

GS4hunnit

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Driver

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From: Ca

PCV Valve Question.

Is the PCV valve suppose to spin freely? Im in the process of troubleshooting the P0171 code and I was checking all hoses in the engine bay. Thanks.

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06-25-13 | 07:05 PM

denut-L

Lexus Test Driver

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From: mN

Yessir it does

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06-25-13 | 08:55 PM

FrankT

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From: Cedar Park, Texas

Im sure your checking for vacuum leaks; but have you tried simply cleaning the MAF sensor, that may do the trick.

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06-26-13 | 09:47 AM

GS4_Fiend

Lexus Test Driver

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From: CA

looking at fuel trims numbers will definitely help you with this.

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06-26-13 | 05:54 PM

vijayn

Driver

Joined: Apr 2013

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From: Auckland, NZ

This is what the code is from a AutoData website:

EOBD code: P0171
Fault location: System too lean, bank 1
Probable cause: Intake/exhaust leak, AIR system, MAF/VAF sensor, fuel pressure/pump, injector(s), HO2S

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