fault code

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12-22-2008, 05:25 PM

greg cook

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Join Date: Dec 2008

Posts: 4

fault code

can anyone tell me what P1670 fault code is on a 7.3

12-22-2008, 06:40 PM

Hayapower

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Join Date: Jul 2006

Posts: 7,474

RE: fault code

DTC P1668 and P1670 indicates that a communication error has occurred between the PCM and the IDM.Possible causes: Open fuse IDM relay Open or shorted IDM enable circuit Open/short in EF circuit Open/short in FDCS circuit IDM powering circuits PCM

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