Pre-1997 Models

code 0171 keeps popping up

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Old Aug 9, 2007 | 07:27 PM
  #1  
Watsonr's Avatar
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From: Virginia Beach VA
code 0171 keeps popping up

Keep getting code 0171, lean bank 1 and then 1 time code 1131,
lack of HO2S11 Switch, indicates lean. Runs rough until I clear the code and may run a week without the code then here it comes again. Any help?
 
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Old Aug 10, 2007 | 08:49 AM
  #2  
projectSHO89's Avatar
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From: St. Louis (Out in the woods)
You have either a vacuum leak or a bad O2 sensor (or both).

Identify your engine.
 
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Old Aug 12, 2007 | 09:58 AM
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Watsonr's Avatar
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From: Virginia Beach VA
Thanks

Thanks for your help, I was leaning toward bad O2. Checked for a leak and didn't find one. It indicated only one side and not both, didn't make sense just one side. Thanks again
Randy
 
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Old Aug 12, 2007 | 10:03 AM
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Swap them out, should set a code for the other bank if the O2 is the problem.
 
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