AutoCodes – Ford – P1238 2001 Ford F150

P1238 2001 Ford F150 Code - Fuel Pump Secondary Circuit Fault

Quick Answer

This DTC indicates the Fuel Pump Driver Module (FPDM2) detected a fuel pump secondary circuit concern. 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
P1238 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 2,259
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 P1238 2001 Ford F150 Description

This DTC indicates the Fuel Pump Driver Module (FPDM2) detected a fuel pump secondary circuit concern. The FPDM2 sends a message to the Powertrain Control Module (PCM) through the fuel pump monitor (FPM2) circuit, indicating this concern was detected. The PCM sets the DTC when the message is received.
OBDII Code P1238 2001 Ford F150 - Fuel Pump Secondary Circuit Fault - AutoCodes.com
P1238 2001 Ford F150 Code - Fuel Pump Secondary Circuit Fault

What are the Possible Causes of the DTC P1238 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 P1238 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 P1238 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 P1238 2001 Ford F150 code?

Need more information on how to fix the P1238 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 P1238 2001 Ford F150 Code

1. What are the common symptoms of OBDII code P1238 on a 2001 Ford F150?

Symptoms may include hard starting, engine stalling, loss of power, and the vehicle not starting at all.

2. What does the OBDII code P1238 Fuel Pump Secondary Circuit Fault indicate for a 2001 Ford F150?

It indicates a problem with the fuel pump secondary circuit, which can impact the fuel delivery system.

3. What are the possible causes of OBDII code P1238 on a 2001 Ford F150?

Possible causes include a faulty fuel pump driver module, damaged wiring, poor electrical connections, or a defective fuel pump.

4. How can I diagnose the Fuel Pump Secondary Circuit Fault in my 2001 Ford F150?

Diagnosis typically involves checking the fuel pump driver module, inspecting the wiring for damage, and testing the fuel pump relay and fuse.

5. Can I still drive my 2001 Ford F150 with OBDII code P1238 present?

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

6. How can I repair OBDII code P1238 Fuel Pump Secondary Circuit Fault on a 2001 Ford F150?

Repair may involve replacing the fuel pump driver module, repairing damaged wiring, ensuring proper electrical connections, or replacing the fuel pump if necessary.

7. Are there any DIY tips for addressing the Fuel Pump Secondary Circuit Fault on a 2001 Ford F150?

DIY tips include checking and cleaning electrical connections, inspecting wiring for wear or damage, and consulting the vehicle's service manual for specific troubleshooting steps.

8. Is it common for the Fuel Pump Secondary Circuit Fault to recur after repair on a 2001 Ford F150?

If the root cause of the issue is not properly addressed during repair, there is a possibility of the code recurring. Thorough diagnosis and repair are essential.

9. Can a faulty fuel pump driver module cause other issues besides triggering OBDII code P1238 on a 2001 Ford F150?

Yes, a faulty fuel pump driver module can lead to a variety of fuel delivery problems, including engine hesitation, misfires, and poor performance.

10. Should I reset the OBDII code P1238 on my 2001 Ford F150 after completing repairs?

Yes, it is recommended to reset the code using an OBDII scanner after completing repairs to see if the issue has been successfully resolved.

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