Ford DTC P1231 – High Speed Fuel Pump Relay activated
DTC P1231 meaning on Ford
Diagnostic Trouble Code (DTC) P1231 for Ford indicates that the High Speed Fuel Pump Relay is activated. This means that the powertrain control module (PCM) has detected an issue with the fuel pump relay circuit.
Ford DTC P1231 symptoms
Symptoms of DTC P1231 on a Ford vehicle may include:
- Engine stalling or hesitation
- Difficulty starting the engine
- Loss of power while driving
- Check Engine Light illuminated
Ford DTC P1231 causes
Common causes of DTC P1231 on Ford vehicles include:
- Defective fuel pump relay
- Faulty wiring or connections in the fuel pump relay circuit
- Issues with the fuel pump itself
- PCM software issues
Ford DTC P1231 seriousness
DTC P1231 should be addressed promptly as it can lead to drivability issues and potential engine damage if the fuel pump is not functioning correctly. Ignoring this code may result in the vehicle stalling unexpectedly or not starting at all.
How to diagnose DTC P1231 on Ford
To diagnose DTC P1231 on a Ford vehicle, a mechanic may perform the following steps:
- Use a scan tool to retrieve the DTC and freeze frame data
- Inspect the fuel pump relay and related wiring for any visible damage
- Test the fuel pump relay for proper operation
- Check the fuel pump for proper function
- Verify the PCM software is up to date
How to fix DTC P1231 on Ford
To fix DTC P1231 on a Ford vehicle, the following steps may be taken:
- Replace the faulty fuel pump relay if necessary
- Repair any damaged wiring or connections in the fuel pump relay circuit
- Replace the fuel pump if it is found to be faulty
- Update the PCM software if needed
How to erase DTC P1231 on Ford
To erase DTC P1231 on a Ford vehicle, a scan tool can be used to clear the code from the PCM’s memory. After the repair has been completed, the code can be cleared to reset the Check Engine Light.
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