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Re: fuel pump disable(when greater then 50%commanded)
Posted to Technical Discussion Forum on 10/13/2014

I just looked up the p1235 code you have. This code sets when the FPDM tells the PCM that it did not receive a valid command signal.

Possible causes include Faulty PCM, Faulty PCM input, Bad wiring between PCM and FPDM, bad FPDM. If this code is still presen... Login to read more.