P1237 2003 Ford F150 Code - Fuel Pump Secondary Circuit Fault
Quick Answer
Fuel Pump Driver Modules (FPDM) controls the voltage to the Fuel Pump in order to maintain proper fuel pressure over the full operating range of the engine. Common causes include Faulty Fuel Pump Driver Module (FPDM), Fuel Pump Driver Module (FPDM) harness is open or shorted, Fuel Pump Driver Module (FPDM) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1237 2003 Ford F150 indicates Fuel Pump Secondary Circuit Fault.
- Common causes
- Common causes include Faulty Fuel Pump Driver Module (FPDM), Fuel Pump Driver Module (FPDM) harness is open or shorted, Fuel Pump Driver Module (FPDM) circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1237 2003 Ford F150 Description
What are the Possible Causes of the DTC P1237 2003 Ford F150?
- Faulty Fuel Pump Driver Module (FPDM)
- Fuel Pump Driver Module (FPDM) harness is open or shorted
- Fuel Pump Driver Module (FPDM) circuit poor electrical connection
- Faulty fuel pump
How to Fix the DTC P1237 2003 Ford F150?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
P1237 indicates that the FPDM has detected a fuel pump secondary circuit fault. The FPDM will send a message to the PCM through the FPM circuit, indicating that this failure has been detected. The PCM will set the DTC when the message is received.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1237 2003 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1237 2003 Ford F150 code?
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Frequently Asked Questions about P1237 2003 Ford F150 Code
1. What are the common symptoms of OBDII code P1237 on a 2003 Ford F150?
The common symptoms of code P1237 include engine stalling, difficulty starting the vehicle, and a decrease in overall engine performance.
2. What is the primary cause of OBDII code P1237 on a 2003 Ford F150?
The primary cause of code P1237 is a fault in the fuel pump secondary circuit, which can be due to issues with the fuel pump itself, wiring, or connectors.
3. How can I diagnose the fuel pump secondary circuit fault triggering OBDII code P1237 on my 2003 Ford F150?
You can diagnose the issue by checking the fuel pump fuse, inspecting the wiring for any visible damage, and testing the fuel pump relay and connector for proper functioning.
4. Can a clogged fuel filter trigger OBDII code P1237 on a 2003 Ford F150?
Yes, a clogged fuel filter can cause insufficient fuel delivery to the engine, which may trigger code P1237 due to the strain it puts on the fuel pump secondary circuit.
5. What are some repair tips for fixing OBDII code P1237 on a 2003 Ford F150?
Repair tips include checking and replacing the fuel pump if necessary, inspecting and repairing any damaged wiring, ensuring proper fuel pressure, and resetting the trouble code after repairs.
6. Is it safe to continue driving my 2003 Ford F150 with OBDII code P1237 related to the fuel pump secondary circuit fault?
It is not recommended to drive the vehicle with a fuel pump secondary circuit fault as it can lead to engine performance issues, stalling, and potential fuel delivery problems.
7. Can a faulty fuel pump driver module be a potential cause of OBDII code P1237 on a 2003 Ford F150?
Yes, a faulty fuel pump driver module can cause issues with the fuel pump secondary circuit, leading to the triggering of code P1237 on a 2003 Ford F150.
8. Will resetting the check engine light resolve OBDII code P1237 on a 2003 Ford F150?
Simply resetting the check engine light will not fix the underlying issue causing code P1237. It is important to diagnose and repair the fuel pump secondary circuit fault to resolve the problem.
9. How can I prevent OBDII code P1237 from occurring on my 2003 Ford F150 in the future?
Regularly maintaining your vehicle, including checking the fuel system components, replacing the fuel filter as recommended, and addressing any issues promptly can help prevent code P1237 from occurring.
10. Can a damaged fuel pump harness cause OBDII code P1237 on a 2003 Ford F150?
Yes, a damaged fuel pump harness can disrupt the fuel pump secondary circuit, leading to code P1237 being triggered on a 2003 Ford F150.
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