Fuel Pump Driver Module Disabled or Offline
1990-1997 Ford Probe 2.2L I4
Description
The PCM has lost communication with the Fuel Pump Driver Module (FPDM). The FPDM controls fuel pump speed via pulse-width modulation. When offline, the fuel pump may not operate, causing no-start or stalling conditions. This is a common issue on late 1990s to 2011 Ford vehicles including F-150, Mustang, and Crown Victoria.
Symptoms
- Engine cranks but will not start
- Engine stalls while driving
- Intermittent no-start condition
- Check Engine Light
- Loss of power while driving
Common Causes
- Faulty or corroded Fuel Pump Driver Module
- Inertia Fuel Shutoff (IFS) switch tripped
- Wiring chafed on top of transmission pan
- Blown fuse in fuel pump circuit
- Corroded FPDM connector
- Failed fuel pump
Diagnostic Steps
- Check if Inertia Fuel Shutoff switch needs reset (located in trunk or behind kick panel)
- Inspect FPDM connector and wiring for corrosion (module often under vehicle, exposed to elements)
- Check FPDM power supply fuse
- Inspect wiring over transmission for chafing
- Test FPDM communication with scan tool
- Check fuel pump operation directly
Repair Notes
Reset IFS switch first. Check FPDM connector for corrosion. Replace FPDM if corroded or faulty. Inspect wiring over transmission pan.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1233 on Other Vehicles
Common Questions
What does code P1233 mean on a 1990-1997 Ford Probe?
P1233 stands for "Fuel Pump Driver Module Disabled or Offline". The PCM has lost communication with the Fuel Pump Driver Module (FPDM). The FPDM controls fuel pump speed via pulse-width modulation. When offline, the fuel pump may not operate, causing no-start or stalling conditions. This is a common issue on late 1990s to 2011 Ford vehicles including F-150, Mustang, and Crown Victoria.
What are the symptoms of P1233 on a Ford Probe?
Common symptoms of P1233 include: Engine cranks but will not start, Engine stalls while driving, Intermittent no-start condition, Check Engine Light, Loss of power while driving.
What causes P1233 on a 1990-1997 Ford Probe?
Common causes of P1233 include: Faulty or corroded Fuel Pump Driver Module, Inertia Fuel Shutoff (IFS) switch tripped, Wiring chafed on top of transmission pan, Blown fuse in fuel pump circuit, Corroded FPDM connector, Failed fuel pump.