P1235high severityPowertrain
Fuel Pump Control Out of Range
on 2004 Lincoln Aviator 4.6L V8 DOHC · AWD
What this code means
The FPDM has detected an invalid or missing fuel pump circuit signal from the PCM. The FPDM reports this failure to the PCM, which then sets the DTC. The fuel pump may operate erratically or not at all.
Symptoms
- Check Engine Light
- Engine stalling
- Poor performance
- Intermittent power loss
- Hard starting
Common causes
- Open FP circuit between PCM and FPDM
- Electronic Throttle Control (ETC) system concern
- Damaged FPDM
- Damaged PCM
- Wiring issue in FP circuit
Diagnostic steps
- Check for ETC DTCs (P2105) — diagnose ETC issues first
- Test FP circuit between PCM and FPDM for continuity
- Inspect wiring for damage or chafing
- Test FPDM operation
- Check PCM output signal
Repair notes
Diagnose ETC issues first if present. Repair FP circuit wiring. Replace FPDM if faulty.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1