AutoCodes – Ford – P1237 2001 Ford F150

P1237 2001 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 2001 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,006
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 20, 2019
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Code P1237 2001 Ford F150 Description

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. The P1237 code indicates the FPDM detected a fuel pump secondary circuit concern. The FPDM sends a message to the Powertrain Control Module (PCM) through the Fuel Pump Monitor (FPM) circuit indicating this concern was detected. The PCM sets the DTC when the message is received.
OBDII Code P1237 2001 Ford F150 - Fuel Pump Secondary Circuit Fault - AutoCodes.com
P1237 2001 Ford F150 Code - Fuel Pump Secondary Circuit Fault

What are the Possible Causes of the DTC P1237 2001 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 2001 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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1237 2001 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 2001 Ford F150 code?

Need more information on how to fix the P1237 2001 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1237 2001 Ford F150 Code

1. What are the common symptoms of OBDII code P1237 on a 2001 Ford F150?

- Common symptoms include engine stalling, lack of power, rough idling, and difficulty starting the vehicle.

2. What causes the OBDII code P1237 on a 2001 Ford F150?

- The code is typically triggered by issues with the fuel pump secondary circuit, such as a faulty fuel pump driver module, wiring issues, or a defective fuel pump.

3. How can I diagnose the fuel pump secondary circuit fault causing OBDII code P1237 on my 2001 Ford F150?

- Diagnosing the issue involves checking the fuel pump driver module, inspecting the wiring for any damage or corrosion, and testing the fuel pump's functionality.

4. Can a bad fuel pump driver module be repaired, or does it need to be replaced?

- In most cases, a faulty fuel pump driver module will need to be replaced rather than repaired to resolve the P1237 trouble code.

5. Are there any DIY repair tips for fixing the fuel pump secondary circuit fault on a 2001 Ford F150?

- DIY repair tips include checking and securing all wiring connections, testing the fuel pump relay, and ensuring proper ground connections.

6. What are the dangers of driving with OBDII code P1237 present on a 2001 Ford F150?

- Driving with code P1237 can lead to fuel delivery issues, potentially causing the engine to stall unexpectedly, leading to unsafe driving conditions.

7. How much does it typically cost to repair the fuel pump secondary circuit fault triggering OBDII code P1237 on a 2001 Ford F150?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $600, including parts and labor.

8. Can resetting the OBDII code P1237 on a 2001 Ford F150 make it go away permanently?

- Resetting the code without addressing the underlying issue will only temporarily clear the code, with the problem likely to resurface until the root cause is fixed.

9. Is it safe to continue driving my 2001 Ford F150 with the fuel pump secondary circuit fault triggering OBDII code P1237?

- It is not recommended to drive the vehicle with this fault as it can lead to potential fuel delivery issues and engine performance problems.

10. How long does it typically take a mechanic to diagnose and repair the fuel pump secondary circuit fault causing OBDII code P1237 on a 2001 Ford F150?

- The diagnosis and repair process can take a few hours to a full day, depending on the extent of the issue and the availability of parts.

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