P1131 Diagnostic Trouble Code Discussion for October 2004
Heated Oxygen Sensor (Bank 1 Sensor 1) Indicates A/F Ratio Too Lean
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| Help Request | Posted | |
| 1997 Ford Expedition XLT 5.4L Misfire, MIL Lamp on VIN: IFMFU18L6V i have ford expedition has codes p01131,p0171,p0172.idle surge and missing.so far i check for vacuum leak.i could not find any.i know smoke macine is the best way check for vacuum leak. unfortunately i dont have.check fitting at pressure regulator is ok.all va... |
October 23, 2004 |
