2002 Volkswagen Passat

Tiny
FERNANDO02
  • MEMBER
  • 2002 VOLKSWAGEN PASSAT
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 90,000 MILES
I have a mechanical problem. The check engine light is on. The diagnostic code is system too lean bank 1 p0171. How can I solve this problem?
Sunday, October 31st, 2010 AT 10:42 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks
2. EGR and PCV valve.
3. Low fuel pressure.
4. Dirty fuel injectors.
5. Mass Air Flow Sensor.
6. Oxygen Sensor.
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Tuesday, November 2nd, 2010 AT 2:23 AM

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