What does code P1231 mean on Ford vehicles?
The high-speed fuel pump relay remains activated.
OBD-II Code Ford
P1231 — Ford — Fuel Pump High-Speed Relay Activated
The high-speed fuel pump relay remains activated.
Common symptoms
- Constant fuel pump noise
- increased fuel consumption
Possible causes
- Faulty relay
- defective fuel pump control module
Initial recommendation
Inspect fuel pump relay and fuel pump control module.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Ford code P1231 with your vehicle's actual symptoms for more complete diagnostic guidance.
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