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P1177 Diagnostic Trouble Code Discussion for June 2004

Electronic Throttle System Motor No. 2 Open or Shorted


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Trouble Ticket Help Requests for DTC P1177
Help Request Posted
1997 Land Rover Discovery SE7 4.0L Excessive Emissions, MIL Lamp on, Low Power VIN: SALJYR4XVA
P1177: Max Neg. FMFR Correction Fault. Fello Techs, I suspect I have a faulty PCM, however I thought some suggestions on your experience with this problem would be helpful considering the cost. I have verified MAF voltage change and connector integrity into the PCM, the values are posted above. Th...
June 18, 2004
1997 Land Rover Discovery SE7 4.0L Excessive Emissions, MIL Lamp on, Low Power VIN: SALJYR4XVA
P1177: Max Neg. FMFR Correction Fault. Fello Techs, I suspect I have a faulty PCM, however I thought some suggestions on your experience with this problem would be helpful considering the cost. I have verified MAF voltage change and connector integrity into the PCM, the values are posted above. Th...
June 18, 2004