Ford DTC P1237 – Fuel Pump Secondary circuit fault
DTC P1237 meaning on Ford
DTC P1237 for Ford indicates a fault in the fuel pump secondary circuit. This fault is related to the fuel pump control module not receiving the expected signal from the fuel pump driver module.
Ford DTC P1237 symptoms
- Check Engine Light (CEL) illuminated on the dashboard
- Engine may stall or have difficulty starting
- Loss of power while driving
- Vehicle may not start at all
Ford DTC P1237 causes
- Defective fuel pump driver module
- Wiring issues in the fuel pump circuit
- Corrosion or poor connections in the circuit
- Fuel pump relay malfunction
Ford DTC P1237 seriousness
The seriousness of DTC P1237 lies in the potential for the vehicle to experience fuel delivery issues, which can lead to engine stalling or failure to start. It is important to address this fault promptly to avoid being stranded or causing further damage to the vehicle.
How to diagnose DTC P1237 on Ford
- Use a diagnostic scanner to retrieve the trouble codes and freeze frame data
- Inspect the fuel pump driver module and related wiring for any visible damage or corrosion
- Check the fuel pump relay for proper operation
- Perform a circuit test to ensure continuity and proper voltage in the fuel pump secondary circuit
How to fix DTC P1237 on Ford
- Replace the fuel pump driver module if found to be faulty
- Repair or replace any damaged wiring in the fuel pump circuit
- Clean or replace the fuel pump relay if necessary
- Ensure all connections are secure and free of corrosion
How to erase DTC P1237 on Ford
- After addressing the root cause of the issue, use a diagnostic scanner to clear the trouble codes
- Ensure the repair has been successful by monitoring the vehicle for any recurring issues
Recommended tools for Ford diagnostics
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Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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