DIAGNOSTIC CODE

  • Tiny
  • swampman
  • Volkswagen

Trying to get some info for computer code P1128. I have a 1999 Volkswagen Beetle, 63000 miles, 2.0 4 cyl. Eng. The car runs great. The light will reset for a couple days then return. My diagnostic tool reads factory code P1128 fuel air metering, has anyone delt with this code? Thank-you

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Wednesday, January 17th, 2007 AT 5:23 PM

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  • Tiny
  • carundell
  • Member

Hey swampman
P1128 refers to a "lean fuel trim condition" sounds like there may be a vacuum leak or secondary AIR system fault. Both can cause a lean condition over time. I would go right to checking for vacuum leaks first! Let us know!

Chris

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Wednesday, January 17th, 2007 AT 7:11 PM
  • Tiny
  • shanewatsonlegalasst
  • Member

Many of factors can come into play. You may have a bad gas cap on your vehicle and it may be affecting the system through the evaporative emmissions. This appears to be a common problem on these type of systems.

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Tuesday, June 3rd, 2008 AT 6:36 PM

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