Trouble Codes: P0174 & P0171

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Jun 29, 2011 | 03:34 PM

dailybeast

Thread Starter

1st Gear

Joined: May 2011

Posts: 32

From: Phoenix, AZ

Trouble Codes: P0174 & P0171

Idle Bank Lean Codes. Any thoughts on where to begin the diagnosis to repair the problem?

Thank you!

Jun 30, 2011 | 09:58 AM

McGovs2.7TB5

3rd Gear

Joined: Jul 2007

Posts: 1,950

From: Denver, Colorado

Run a search using the codes to find more info, but from my experience p0171 was a bad MAF. That code can be tripped by a number of things.

Jun 30, 2011 | 10:07 AM

TTQ2K2

1st Gear

Joined: Jun 2010

Posts: 233

From: North Dallas suburb

http://wiki.ross-tech.com/wiki/index...ry:Fault_Codes

breakdown of codes and possible resolution here. ^^^^.

cheers

Jun 30, 2011 | 12:46 PM

CCA4

Administrator

Joined: Jun 2008

Posts: 7,588

From: NW PA

My guess is primary O2 sensor(s). I don't think the ECU adjusts fueling based on MAF readings at idle.

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