check engine light

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Dec 7, 2009 | 07:54 PM

redcamaro72

Thread Starter

Intermediate

Joined: May 2008

Posts: 39

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From: Northeast Pa

check engine light

check engine light came on and I was near auto zone. They picked up 2 codes. po171 and po174. Can anyone explain what these codes are and what I need to do to fix the problem?

Dec 8, 2009 | 01:17 PM

stock to the bone

Racer

Joined: Oct 2009

Posts: 255

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if im not mistaken PO171 means ur bank 1 is running lean, the O2 sensor detects abnormality in ur bank1. 1, could be bad fuel, 2, could be ur O2 sensor needs to be replaced.