AutoCodes – Ford – P1235 2001 Ford F150

P1235 2001 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 2001 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 2,522

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 2001 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 2001 Ford F150 - Fuel Pump Control Out of Range - AutoCodes.com — P1235 2001 Ford F150 Code - Fuel Pump Control Out of Range

What does this mean?

What are the Possible Causes of the DTC P1235 2001 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 2001 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 2001 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.

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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.