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02 Ford Ranger OBD2 codes

Tiny
GOAT
  • MEMBER
  • 2002 FORD RANGER
PO171, PO301, PO302, PO303, PO304. System to lean (bank 1) all cylinders misfire detected. Main cause, Fixes? Running extremely rough.
Saturday, February 12th, 2011 AT 11:58 PM

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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Monday, March 14th, 2011 AT 3:47 AM

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