AutoCodes – Ford – P1238 1997 Ford F150

P1238 1997 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 1997 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.

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Code Popularity 2,079

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 20, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1238 1997 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 1997 Ford F150 - Fuel Pump Secondary Circuit Fault - AutoCodes.com — P1238 1997 Ford F150 Code - Fuel Pump Secondary Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P1238 1997 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 1997 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.

What does this mean?

Code Tech Notes

Note: For LS6/LS8 and Thunderbird, the FPDM functions are incorporated in the Rear Electronics Module (REM). Also, the REM does not use an FPM circuit. Diagnostic information is sent on the communication link.
P1238 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 P1238 1997 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 1997 Ford F150 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 1997 Ford F150 Code

1. What are common symptoms of OBDII code P1238 in a 1997 Ford F150?

The common symptoms include engine stalling, no start condition, rough idle, and a lack of power during acceleration.

2. What does the OBDII code P1238 indicate in a 1997 Ford F150?

The code P1238 indicates a Fuel Pump Secondary Circuit Fault in the 1997 Ford F150, specifically related to the fuel pump control module.

3. What are the possible causes of the OBDII code P1238 in a 1997 Ford F150?

Common causes of the P1238 code include a faulty fuel pump driver module, corroded electrical connections, wiring issues, or a defective fuel pump.

4. How can I diagnose the Fuel Pump Secondary Circuit Fault in my 1997 Ford F150?

Diagnosis involves checking the fuel pump driver module for power and ground, inspecting the electrical connections for corrosion, and testing the fuel pump for proper operation.

5. Can I still drive my 1997 Ford F150 with the P1238 code present?

It is not recommended to drive the vehicle with the P1238 code active, as it can lead to engine performance issues and potential safety hazards.

6. How do I repair the Fuel Pump Secondary Circuit Fault in my 1997 Ford F150?

Repair options include replacing the fuel pump driver module, repairing or replacing corroded wiring, and ensuring proper electrical connections.

7. Is it necessary to reset the OBDII code P1238 after completing repairs on a 1997 Ford F150?

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

8. Can a DIY enthusiast fix the Fuel Pump Secondary Circuit Fault in a 1997 Ford F150?

With the right tools and knowledge, some DIY enthusiasts may be able to diagnose and repair the issue, but it is recommended to seek professional help for complex electrical issues.

9. How much does it cost to fix the P1238 code in a 1997 Ford F150?

The cost of fixing the P1238 code can vary depending on the exact cause of the issue, but it may range from $200 to $600, including parts and labor.

10. Are there any preventive measures to avoid the Fuel Pump Secondary Circuit Fault in a 1997 Ford F150?

Regular maintenance, such as checking the fuel pump driver module and electrical connections for signs of wear or corrosion, can help prevent the occurrence of the P1238 code.