AutoCodes – Ford – P1235 2002 Ford F150

P1235 2002 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 2002 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 2,355

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 2002 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 2002 Ford F150 - Fuel Pump Control Out of Range - AutoCodes.com — P1235 2002 Ford F150 Code - Fuel Pump Control Out of Range

What does this mean?

What are the Possible Causes of the DTC P1235 2002 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 2002 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 2002 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 2002 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 2002 Ford F150 Code

1. What does the OBDII code P1235 mean for a 2002 Ford F150?

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

2. What are common symptoms of the P1235 code in a 2002 Ford F150?

Symptoms include engine stalling, rough idling, hesitation during acceleration, and difficulty starting the engine.

3. What causes the P1235 code to appear on a 2002 Ford F150?

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

4. How can I diagnose the P1235 code on my Ford F150?

Start by inspecting the fuel pump driver module for damage or corrosion, checking wiring and connectors for continuity issues, and testing the fuel pump for proper operation.

5. Can a bad fuel pump driver module trigger the P1235 code?

Yes, a faulty fuel pump driver module is a frequent cause of this code and should be inspected or replaced if necessary.

6. Is it safe to drive with the P1235 code on a 2002 Ford F150?

Driving with this code is not recommended, as it can lead to engine stalling or failure, which could be unsafe.

7. How do I fix the P1235 code on a 2002 Ford F150?

Repairs may include replacing the fuel pump driver module, repairing damaged wiring or connectors, or replacing the fuel pump if itâ€™s defective.

8. Where is the fuel pump driver module located on a 2002 Ford F150?

The fuel pump driver module is typically located near the rear of the vehicle, above the spare tire or on the frame rail.

9. Will clearing the P1235 code fix the issue?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.

10. How much does it cost to repair the P1235 code on a 2002 Ford F150?

Repair costs vary but typically range from $100 to $500, depending on whether the issue is with the fuel pump driver module, wiring, or the fuel pump itself.