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2000 Volkswagen Jetta diagnostic code P1128

Tiny
YORONGL
  • MEMBER
  • 2000 VOLKSWAGEN JETTA
Engine Performance problem
2000 Volkswagen Jetta 4 cyl Two Wheel Drive Manual

our machine read that read long term fuel trim system to lean. What is the probable failure, and how do I fix that.
Tuesday, April 7th, 2009 AT 5:47 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Most common culprit is a faulty oxygen sensor or clogged catalytic coverter. Have converter flow tested and also test each oxygen sensor and their wiring.

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Tuesday, April 7th, 2009 AT 6:44 PM

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