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P1235 2001 Ford F150 Code - Fuel Pump Control Out of Range

Quick Answer

The P1235 diagnostic trouble code (DTC) for a 2001 Ford F150 indicates that the fuel pump control circuit is out of range. Common causes include Faulty fuel pump control module, Damaged wiring or connectors in the fuel pump circuit, Malfunctioning fuel pump relay. 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
P1235 2001 Ford F150 indicates Fuel Pump Control Out of Range.
Common causes
Common causes include Faulty fuel pump control module, Damaged wiring or connectors in the fuel pump circuit, Malfunctioning fuel pump relay.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1235 2001 Ford F150 Description

The P1235 diagnostic trouble code (DTC) for a 2001 Ford F150 indicates that the fuel pump control circuit is out of range. This means that the powertrain control module (PCM) has detected a voltage signal from the fuel pump control module that is not within the expected range. The fuel pump control module is responsible for regulating the fuel pump's operation, ensuring that the correct amount of fuel is delivered to the engine at all times. When this control module malfunctions or sends out-of-range signals, it can lead to various performance issues and potentially cause long-term damage to the vehicle.

OBDII Code P1235 2001 Ford F150 - Fuel Pump Control Out of Range
P1235 2001 Ford F150 Code - Fuel Pump Control Out of Range

Common Causes of P1235 2001 Ford F150

  1. Faulty fuel pump control module.
  2. Damaged wiring or connectors in the fuel pump circuit.
  3. Malfunctioning fuel pump relay.
  4. Issues with the PCM.
  5. Corrosion or poor connections in the fuel pump control circuit.

Symptoms of P1235 2001 Ford F150

  1. Engine misfires or hesitation during acceleration.
  2. Stalling or difficulty starting the engine.
  3. Reduced fuel efficiency.
  4. Illumination of the check engine light.
  5. Rough idling or engine performance.

How to Fix P1235 2001 Ford F150

  1. Diagnose the issue using a scan tool to retrieve the DTC and pinpoint the exact cause of the problem.
  2. Inspect the wiring and connectors in the fuel pump control circuit for any damage or corrosion.
  3. Test the fuel pump control module and fuel pump relay for proper operation.
  4. Replace any faulty components, such as the fuel pump control module, relay, or damaged wiring.
  5. Clear the DTC and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P1235 2001 Ford F150

The typical repair costs for addressing a P1235 code on a 2001 Ford F150 can vary depending on the specific cause of the issue. In general, the cost of parts such as a fuel pump control module or relay can range from $100 to $300, while labor costs can range from $80 to $150 per hour. Overall, the total repair cost for this issue could range from $200 to $600, including parts and labor. It is advisable to consult with a professional mechanic or auto repair shop to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle.

What does this mean?

Tech Notes for P1235 2001 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.

P1235 indicates that the FPDM has detected an invalid or missing FP circuit signal from the PCM. 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.

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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 P1235 2001 Ford F150 Code

1. What does the OBDII code P1235 mean on a 2001 Ford F150?

P1235 indicates that the Powertrain Control Module (PCM) has detected the fuel pump control circuit is operating out of its expected range.

2. What are the common symptoms of a P1235 code in a Ford F150?

Common symptoms include engine stalling, difficulty starting, poor acceleration, and reduced fuel efficiency.

3. What causes a P1235 code in a 2001 Ford F150?

Possible causes include a faulty fuel pump driver module, wiring issues such as corrosion or damage, a failing fuel pump, or a malfunctioning PCM.

4. Can a bad fuel pump trigger the P1235 code?

Yes, a failing or intermittent fuel pump can cause the fuel system to operate outside its expected range, triggering the P1235 code.

5. How do I diagnose the P1235 code on my Ford F150?

Start by inspecting the wiring and connectors for damage or corrosion, check the fuel pump driver module for faults, and test the fuel pump for proper operation.

6. What is the fuel pump driver module, and how does it relate to P1235?

The fuel pump driver module regulates the fuel pump's operation. If it fails or has a poor connection, it can cause the system to go out of range, triggering P1235.

7. Can P1235 cause my Ford F150 to stall while driving?

Yes, P1235 can cause intermittent fuel delivery issues, leading to engine stalling or hesitation.

8. How can I fix the P1235 code on my 2001 Ford F150?

Repairs may include replacing the fuel pump driver module, repairing or replacing damaged wiring, replacing the fuel pump, or reprogramming or replacing the PCM.

9. Is the P1235 code safe to ignore?

No, ignoring the P1235 code can lead to engine performance issues, potential stalling, and further damage to the fuel system components.

10. How much does it typically cost to repair a P1235 code on a Ford F150?

Repair costs vary depending on the root cause but may range from $100 for wiring repairs to $800 or more for replacing the fuel pump or driver module.

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