Join Now
International Automotive Technicians Network

P0203 Diagnostic Trouble Code Discussion for May 2011

Fuel Injector 3 Control Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

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
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