What this code means

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

1. Check if Inertia Fuel Shutoff switch needs reset (located in trunk or behind kick panel)
2. Inspect FPDM connector and wiring for corrosion (module often under vehicle, exposed to elements)
3. Check FPDM power supply fuse
4. Inspect wiring over transmission for chafing
5. Test FPDM communication with scan tool
6. 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.

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