AutoCodes – Ford – P1235 2003 Ford F150

P1235 2003 Ford F150 Code - Fuel Pump Control Out of Range

Quick Answer

The P1235 code indicates the Fuel Pump Drive Module (FPDM) detected an invalid or missing Fuel Pump (FP) circuit signal from the Powertrain Control Module (PCM). Common causes include Faulty Fuel Pump Drive Module (FPDM), FPDM harness is open or shorted, 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: P1235 2003 Ford F150 indicates Fuel Pump Control Out of Range.
Common causes: Common causes include Faulty Fuel Pump Drive Module (FPDM), FPDM harness is open or shorted, 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 4,618

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 P1235 2003 Ford F150 Description

The P1235 code indicates the Fuel Pump Drive Module (FPDM) detected an invalid or missing Fuel Pump (FP) circuit signal from the Powertrain Control Module (PCM). The FPDM sends a message to the PCM through the FPM circuit, indicating this failure was detected. The PCM sets the DTC when the message is received.

OBDII Code P1235 2003 Ford F150 - Fuel Pump Control Out of Range - AutoCodes.com — P1235 2003 Ford F150 Code - Fuel Pump Control Out of Range

What does this mean?

What are the Possible Causes of the DTC P1235 2003 Ford F150?

Faulty Fuel Pump Drive Module (FPDM)
FPDM harness is open or shorted
FPDM circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1235 2003 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.
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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1235 2003 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 P1235 2003 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 P1235 2003 Ford F150 Code

1. What does OBDII code P1235 on a 2003 Ford F150 mean?

The code P1235 indicates that the Fuel Pump Control is out of range on a 2003 Ford F150.

2. What are the common symptoms of OBDII code P1235 on a 2003 Ford F150?

Common symptoms include engine stalling, difficulty starting the vehicle, loss of power, and the fuel pump running continuously.

3. What are the possible causes of OBDII code P1235 on a 2003 Ford F150?

Possible causes include a faulty fuel pump driver module, damaged wiring or connectors, a defective fuel pump, or issues with the fuel pump control circuit.

4. How can I diagnose the OBDII code P1235 on a 2003 Ford F150?

Diagnosis typically involves checking the fuel pump driver module, inspecting the wiring and connectors for damage, testing the fuel pump, and verifying the fuel pump control circuit's operation.

5. Can I still drive my 2003 Ford F150 with OBDII code P1235?

It is not recommended to drive the vehicle with code P1235, as it can lead to potential fuel delivery issues and cause the engine to stall unexpectedly.

6. How do I repair OBDII code P1235 on a 2003 Ford F150?

Repair options may include replacing the fuel pump driver module, repairing damaged wiring or connectors, replacing the fuel pump, or addressing issues with the fuel pump control circuit.

7. Is it safe to reset the OBDII code P1235 on a 2003 Ford F150 using a scanner?

While you can reset the code with a scanner, it is essential to address the underlying issue causing the code to prevent further problems with the fuel system.

8. Can a DIY enthusiast fix OBDII code P1235 on a 2003 Ford F150?

Depending on the level of expertise, a DIY enthusiast may be able to diagnose and repair code P1235 by following the vehicle's service manual and using the appropriate tools.

9. How much does it cost to repair OBDII code P1235 on a 2003 Ford F150?

The cost of repairing code P1235 can vary depending on the specific issue causing the code and whether the repair is done at a dealership, independent mechanic, or DIY.

10. Will OBDII code P1235 on a 2003 Ford F150 affect fuel efficiency?

Yes, code P1235 can impact fuel efficiency due to potential fuel pump control issues affecting the proper delivery of fuel to the engine.