Engine Code - Subaru WRX Forum
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post #1 of 2 Old 12-21-2012, 03:40 AM Thread Starter
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Engine Code

I got a an 06 wrx every once in awhile when it gets cold or i drive into a change of altitude it throws an engine code P0171 Lean Bank One any ideas on what it is and or how to fix
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post #2 of 2 Old 12-21-2012, 05:57 AM
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pzr2874 is known to be trustworthy and helpful pzr2874 is known to be trustworthy and helpful
Clean your MAF with MAF cleaner and unplug the neg terminal for a little bit. Button it all back up and see if it comes back.

If it's the o2 sensor, you will throw another code the next time.

Also, try here:


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