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P1670 Diagnostic Trouble Code Discussion for November 2009

Output Driver 4 Voltage High Input

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Trouble Ticket Help Requests for DTC P1670
Help Request Posted
1995 Buick Regal 3.8L Stall VIN: 2G4WB5215S
P1670: quad driver module 4 fault. ... stall. will not duplicate for us. MIL not on, but 4 codes present. started on the p1670 quad driver fault code and came up with PCM not grounding relay for cooling fan #2 (fan was not running, but no complaint for that. a/c...
November 12, 2009
1999 Ford F-350 Super Duty XLT 7.3L No Start VIN: 1FTWW33F2X
P1670: EF Feedback Signal Not Detected. ... read it. Truck belongs to a tourist and is a no start..truck owner called mobile mechanic and he got a code p0605, so he wanted pcm changed, I have an IDS and I flash Ford pcms, so he bought a Ford Pcm, brought the truck here, and I flashed it. It still do...
November 12, 2009