Codes
MP1
03-09-2004, 12:12 PM
I have two codes I need some info on, 542 fuel pump circuit open; PCM to motor, and 543 fuel pump circuit open; Battery to PCM. Do these have to do with the relay?
Mendari
03-09-2004, 02:10 PM
A failing circuit sounds like a solenoid. However, a relay may also be to blame.
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