P1234 FORD Possible Causes
- Inertia fuel shutoff (IFS) switch needs to be reset
- Faulty Fuel Pump Driver Module (FPDM)
- Fuel Pump Driver Module (FPDM) harness is open or shorted
- Fuel Pump Driver Module (FPDM) circuit poor electrical connection
- Faulty Inertia Fuel Shutoff (IFS) switch
- Faulty Powertrain Control Module (PCM)
How do I fix code P1234 FORDCheck the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
1. Disconnect the inertia switch harness connector
2. Turn key to ON position (Engine OFF)
3. Measure voltage of circuit between inertia switch harness connector and ground
4. If battery voltage is found, replaced Inertia Switch
5. Clear codes.
Cost of diagnosing the P1234 FORD code
Labor: 1.0The cost of diagnosing the P1234 FORD code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
- Engine Light ON (or Service Engine Soon Warning Light)
P1234 FORD MeaningThe Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit from the Fuel Pump Driver Module (FPDM). With the key on, the FPDM continuously sends a duty cycle signal to the PCM through the FPM circuit. The test fails if the PCM stops receiving the duty cycle signal.
P1234 FORD More InformationNeed more information on how to fix the P1234 FORD code?
Get Access to Factory Service Manuals
Information for specific Ford models
- P1234 1997 FORD F150
- P1234 1998 FORD F150
- P1234 1999 FORD F150
- P1234 2000 FORD F150
- P1234 2001 FORD F150
- P1234 2002 FORD F150
- P1234 2003 FORD F150
- P1234 2006 FORD FUSION
- P1234 2007 FORD FUSION
- P1234 2008 FORD FUSION
- P1234 2009 FORD FUSION
- P1234 2010 FORD FUSION
- P1234 2011 FORD FUSION
- P1234 2012 FORD FUSION