2003 Ford Expedition

Tiny
LLOYDB1973
  • MEMBER
  • 2003 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 123,000 MILES
The codes read p1131 and p1151 are my o2 sensors bad or the pcm need replacing?
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Saturday, July 17th, 2010 AT 1:26 PM

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Tiny
DAVE H
  • EXPERT
Hello .. thanks for the donation .. much appreciated

For Continuous Memory Only DTCs P1130, P1150, & KOER & Continuous Memory Only DTCs P1131, P1132, P1152, P2195, P2196, P2197 & P2198, & For KOEO, KOER & Continuous Memory DTC P1151: Upstream HO2S Not Switching
DTCs P1131, P1151, P2195 and P2197 indicate air/fuel ratio is correcting rich for an overly lean condition. DTCs P1132, P1152, P2196 and P2198 indicate air/fuel ratio is correcting lean for an overly rich condition. DTCs P1130 and P1150 indicate when an HO2S fails to switch due to a circuit or fuel exceeding a calibrated limit. HO2S DTC identification is as follows:
DTCs P1130, P1131, P1132, P2195 & P2196 are for HO2S-11.
DTCs P1150, P1151, P1152 P2197 & P2198 are for HO2S-12.

Possible causes are:

Fuel System

Excessive fuel pressure, leaking or contaminated fuel injectors, leaking fuel pressure regulator, low fuel pressure or engine running out of fuel or vapory recovery system fault.

Induction System

Air leaks after MAF sensor, air intake system obstructions, vacuum leaks, PCV system or improperly seated engine oil dipstick.

EGR System

Leaking gasket, stuck EGR valve or leaking diaphragm or EVR.

Engine Mechanical

Engine oil overfilled, cam timing, cylinder compression or exhaust leaks before or near HO2S.
Inspect engine for obvious defects in specified systems. Repair as necessary

Hope this helps


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Saturday, July 17th, 2010 AT 6:55 PM

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