Engine-CodesFord – P1237 1997 Ford F150

P1237 1997 Ford F150 Code - Fuel Pump Secondary Circuit Fault

Quick Answer

The P1237 code for a 1997 Ford F150 indicates a Fuel Pump Secondary Circuit Fault. Common causes include Faulty fuel pump relay, Wiring issues in the fuel pump circuit, Malfunctioning fuel pump control module. 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 1997 Ford F150 indicates Fuel Pump Secondary Circuit Fault.
Common causes
Common causes include Faulty fuel pump relay, Wiring issues in the fuel pump circuit, Malfunctioning fuel pump control module.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1237 1997 Ford F150 Description

The P1237 code for a 1997 Ford F150 indicates a Fuel Pump Secondary Circuit Fault. This means that there is an issue with the secondary circuit of the fuel pump, which is responsible for delivering fuel from the tank to the engine. The fuel pump is a crucial component of the vehicle's fuel system, as it ensures the proper amount of fuel is delivered to the engine for combustion.

OBDII Code P1237 1997 Ford F150 - Fuel Pump Secondary Circuit Fault
P1237 1997 Ford F150 Code - Fuel Pump Secondary Circuit Fault

Common Causes of P1237 1997 Ford F150

  1. Faulty fuel pump relay
  2. Wiring issues in the fuel pump circuit
  3. Malfunctioning fuel pump control module
  4. Defective fuel pump
  5. Electrical issues in the secondary circuit

Symptoms of P1237 1997 Ford F150

  1. Engine misfires
  2. Stalling or hesitation during acceleration
  3. Difficulty starting the vehicle
  4. Reduced fuel efficiency
  5. Illumination of the check engine light

How to Fix P1237 1997 Ford F150

  1. Diagnose the specific cause of the fault using a diagnostic scanner to pinpoint the issue in the fuel pump secondary circuit.
  2. Check the fuel pump relay and replace it if faulty.
  3. Inspect the wiring in the fuel pump circuit for any damage or corrosion, repairing or replacing as necessary.
  4. Test the fuel pump control module for proper functioning and replace if needed.
  5. If the fuel pump itself is found to be defective, replace it with a new unit.

Cost to Fix P1237 1997 Ford F150

The typical repair costs for a Fuel Pump Secondary Circuit Fault can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $100 to $500, while labor costs can range from $150 to $300. Overall, the total repair cost for this issue could be anywhere from $250 to $800. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at the auto repair shop. It's advisable to obtain a detailed quote from a trusted mechanic before proceeding with the repairs.

Tech Notes for P1237 1997 Ford F150

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.

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.

When is the Code Detected?

Fuel pump driver module has detected a fault in the fuel pump secondary circuit

Need more information about the P1237 1997 Ford F150 code?

Need more information on how to fix the P1237 1997 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1237 1997 Ford F150 code diagnosed by a professional: Find a repair shop in your area

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 1997 Ford F150 Code

1. What does OBDII code P1237 mean on a 1997 Ford F150?

Code P1237 indicates a Fuel Pump Secondary Circuit Fault, meaning the PCM has detected an issue in the secondary circuit of the fuel pump, such as a voltage or signal problem.

2. What are the symptoms of a P1237 code in a 1997 Ford F150?

Common symptoms include engine stalling, difficulty starting, poor acceleration, reduced fuel efficiency, or the engine not starting at all.

3. What causes the P1237 code to appear on a 1997 Ford F150?

Potential causes include a faulty fuel pump driver module, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump, or a malfunctioning PCM.

4. Can I drive my 1997 Ford F150 with a P1237 code?

It’s not recommended to drive with a P1237 code, as it could lead to engine stalling or other performance issues that may leave you stranded.

5. How do I diagnose the P1237 code on my 1997 Ford F150?

Start by inspecting the wiring and connectors in the fuel pump circuit for damage or corrosion. Use a multimeter to check for proper voltage and continuity. Test the fuel pump and the fuel pump driver module.

6. How can I fix the P1237 code on my 1997 Ford F150?

Repairs may include replacing the fuel pump driver module, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the fuel pump if it’s faulty.

7. What tools are needed to troubleshoot the P1237 code?

You’ll need an OBDII scanner, a multimeter, and possibly basic tools for accessing and inspecting wiring or components.

8. Could a bad fuel pump relay cause the P1237 code on a 1997 Ford F150?

Yes, a faulty fuel pump relay could cause the P1237 code by interrupting the secondary circuit’s proper operation.

9. Does the P1237 code mean the fuel pump is bad on my 1997 Ford F150?

Not necessarily. While a bad fuel pump is a possibility, the issue could also stem from wiring problems, the fuel pump driver module, or the PCM.

10. Is the P1237 code specific to Ford vehicles?

While P1237 is often associated with Ford vehicles, the specific meaning and diagnosis steps can vary by manufacturer. For the 1997 Ford F150, it relates to the fuel pump secondary circuit.

Discuss the causes and fixes for P1237 1997 Ford F150 OBDII Code

Code P1237 1997 Ford F150 comments

No comments found for this page.