![]() See MODULE COMMUNICATIONS NETWORK - LS article in ACCESSORIES & EQUIPMENT for complete DTC listing and test procedures.Ģ003 ENGINE PERFORMANCE Self-Diagnostics - CNG, Flex-Fuel & Gasoline On LS models, these DTCs indicate PCM is not receiving fuel level information on SCP network from Rear Electronics Module (REM). Inertia Fuel Shutoff (IFS) Switch Needs To Be Resetįor additional testing information, see DIAGNOSTIC AIDS.ĭTC P1233 and P1234 are identical, except DTC P1234 will not illuminate Malfunction Indicator Lamp (MIL). ![]() 312: Identifying Fuel Pump & Rear Electronics Module Circuits & Connector Terminals (LS & Thunderbird) Courtesy of FORD MOTOR CO.ġ) For KOEO, KOER & Continuous Memory DTCs P1233 & P1234: Check For KOEO DTC P1233 Or P1234 These DTCs indicate PCM has stopped receiving duty cycle signal from Fuel Pump Driver Module (FPDM).
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