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P1670 FORD -

my truck f350 7.3 turns over but will not start? i am getting the code 1670 & 1280
asked Aug 3, 2011 by anonymous

1 Answer

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

P1280 indicates injector control signal circuit out of range low.

Possible causes:
-- biased ICP sensor/PCM
-- open ICP sensor circuit
-- short to SIG RTN or PWR GND on ICP sensor circuit
-- open in VREF circuit
 

answered Aug 5, 2011 by anonymous

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