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Discussion Starter · #1 · (Edited)
Purge valve replacement clears (5) OBD codes

My wife's 2012 Cruze LS(?) with Ecotech had a few issues:
  • hard starting after gas fill-up
  • sometimes erratic idle
  • Stabile-trac warning on dash appearing often

After doing some online (thanks to those who posted) research and talking to ASE-certified mechanic (brother) I decided to change the vapor canister purge valve. It is located on the top, rear of engine, towards the left (when looking at the engine), see photo. I checked the OBD2 codes before changing the purge valve. The purge valve replacement is a
ACDelco 214-2317 GM Original Equipment Vapor Canister Purge Valve, made by Bosch, acquired from Amazon for under $18.


On 2012 Cruze: 5 codes on OBD2 using Actron scan tool
  • P015B: O2 sensor delayed response, lean too rich Bank 1 sensor 1 "confirmed"
  • P0171 (3 of them): Bank 1 System too lean "confirmed"
  • P2270: Oxygen sensor signal stuck lean Bank 1 Sensor 2 "confirmed"

The P0171 code also returned as "permanent" on my code scanner.

After changing the purge valve, NO CODES! Woohoo, success :) The car was driven about 35 miles, suburban street driving, no codes have reappeared.

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Discussion Starter · #2 ·
quick update Jan. 30: over 300 miles put on since purge valve replacement, no check engine warnings have returned. No Stabile-trac warnings, and car was fully refueled and started normally.
 
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