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| 1997 to 2003 F-150 4.2L, 4.6L, and 5.4L equipped F-150s. |
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#5
Thu, March 18th, 2010, 03:08 PM
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Causes
A code P1151 may mean that one or more of the following has happened: Electrical: • Short to VPWR in the harness or HO2S • Water in the harness connector • Open/shorted HO2S circuit • Corrosion or poor mating terminals and wiring • Damaged HO2S • Damaged PCM Fuel System: • Excessive fuel pressure Leaking/contaminated fuel injectors Leaking fuel pressure regulator Low fuel pressure or running out of fuel Vapor recovery system Induction System: • Air leaks after the MAF • Vacuum Leaks PCV system: • Improperly seated engine oil dipstick EGR System: • Leaking gasket • Stuck EGR valve • Leaking diaphragm or EVR Base Engine: • Oil overfill • Cam Timing • Cylinder compression • Exhaust leaks before or near the HO2S(s) That's if you really want to have some fun?
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