I have a 2005 super duty diesel that cranks but won't start. No communication with scan tool and all fuses are good.Could it be the PCM?

34,145

Asked by tuff4x4 Sep 19, 2007 at 09:41 PM about the 2005 Ford F-350 Super Duty XLT Crew Cab LB 4WD

Question type: Maintenance & Repair

Vehicle died while driving on interstate,Checked vehicle out,no communication with scan tool and all fuses are good.

2 Answers

67,945

Yeah, if there's no communication with the scan tool, it sounds like the PCM is shot. No communication with OBD-II is a typical sign of PCM failure.

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35

Maybe a bit late for you - same thing happened to mine, with obvious power loss as well. Recall repair - "oil pump sending unit". No issues now - noticeable power improvement when towing.

1 people found this helpful.

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