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P1668 Diagnostic Trouble Code Discussion for September 2008

Generator L-Terminal Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1668
Help Request Posted
2000 Ford F-450 Super Duty Lariat 7.3L Misfire VIN: 1FDXF47F1Y
P1668: PCM To IDM Diagnostic Communication Error. ... P1272, P1274, P1294. Followed pinpoint tests, checked continuity from IDM to valve cover connector on high side, and low sides of all injectors. All have continuity. Checked resistance of suspect injectors, have approx 3 ohm...
September 15, 2008