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P0203 Diagnostic Trouble Code Discussion for May 2011

Fuel Injector 3 Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0203
Help Request Posted
2004 Ford E-350 Super Duty 5.4L Misfire, MIL Lamp on VIN: 1FDWE35L84
P0203: 3 injector circuit problem. this van has been to ford dealer 3 times for same problem. they replaced plugs, no coils or boots. replced mass air flow sensor and all pf the ducts to throttle body, big money, also new ecm and reflash. still same priblem. runs rough. so i replaced all plugs ...
May 09, 2011