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P1233 Diagnostic Trouble Code Discussion for July 2013

Fuel Injector 4 Control Circuit Shorted

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Trouble Ticket Help Requests for DTC P1233
Help Request Posted
2004 Mercury Grand Marquis LS 4.6L MIL Lamp on, code P1233 VIN: 2MEFM75W84
P1233: fuel pump control module. ... with a code in it. P1233. Car has no sympt. other than a small shake that is very intermin. Never seen this code before. All I did was to check all the electrical connectors for this fuel system and found all to be clean and tight. I did go ahead and repla...
July 16, 2013