Question about 2005 Pontiac Vibe

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Getting a p0171 error What can I do to eliminate the most likelty cause

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Causes

A code P0171 may mean that one or more of the following has happened:

  • The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
  • There could be a vacuum leak downstream of the MAF sensor.
Possible Solutions

Possible solutions include:

  • In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
  • Inspect all vacuum and PCV hoses, replace if necessary
  • Check for a dirty fuel filter and proper fuel pressure

Posted on Nov 04, 2010

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Posted on Jan 02, 2017

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p0113 is "air intake temperature" sensor voltage too high.
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You can pretty much ignore your p0113, p0171 may be caused by a bad MAF, and p0300 may be caused by your p0171.

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Bank 1 is always the side of the engine where #1 cylinder is
located. In your case it is front-most cylinder on the right side
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So bank one is the passenger side.

If there are any other engine control codes, you need to fix those
first, as they may be the cause of the lean condition.

If that is the only code you are getting, then diagnostic testing
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check air fuel ratio sensors. to test main AFR sensors directly you will need a good scan-tool to test parameters.
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