02 ford ranger obd2 codes

2002 FORD RANGER
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GOAT
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  • 1 POST
PO171, PO301, PO302, PO303, PO304. system to lean (bank 1) all cylinders misfire detected. Main cause, Fixes? Running extremely rough.
Feb 12, 2011 at 11:58 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
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.
Mar 14, 2011 at 3:47 AM
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