Engine-Codes.com
Engine-Codes – Ford – P1235 Ford

P1235 Ford Code - Fuel Pump Control Out of Range

Quick Answer

The P1235 Ford code indicates that there is an issue with the fuel pump control circuit being out of range. Common causes include Malfunctioning fuel pump: A failing fuel pump can cause the fuel pump control circuit to go out of range, Faulty fuel pump driver module: The fuel pump driver module controls the operation of the fuel pump and can malfunction, triggering this code, Wiring issues: Corrosion, breaks, or shorts in the wiring connected to the fuel pump control circuit can cause erratic signals. 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 Ford indicates Fuel Pump Control Out of Range.
Common causes
Common causes include Malfunctioning fuel pump: A failing fuel pump can cause the fuel pump control circuit to go out of range, Faulty fuel pump driver module: The fuel pump driver module controls the operation of the fuel pump and can malfunction, triggering this code, Wiring issues: Corrosion, breaks, or shorts in the wiring connected to the fuel pump control circuit can cause erratic signals.
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 07, 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 P1235 Ford Description

The P1235 Ford code indicates that there is an issue with the fuel pump control circuit being out of range. The fuel pump plays a crucial role in delivering fuel from the tank to the engine, ensuring proper combustion and performance. When the fuel pump control is out of range, it can lead to various issues that affect the vehicle's performance and efficiency.

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

Common Causes of P1235 Ford

  1. Malfunctioning fuel pump: A failing fuel pump can cause the fuel pump control circuit to go out of range.
  2. Faulty fuel pump driver module: The fuel pump driver module controls the operation of the fuel pump and can malfunction, triggering this code.
  3. Wiring issues: Corrosion, breaks, or shorts in the wiring connected to the fuel pump control circuit can cause erratic signals.
  4. ECM malfunction: A problem with the Engine Control Module can also lead to the fuel pump control being out of range.

Symptoms of P1235 Ford

  1. Engine hesitation or stalling: A malfunctioning fuel pump control can lead to inconsistent fuel delivery, causing the engine to hesitate or stall during acceleration.
  2. Reduced fuel efficiency: When the fuel pump control is out of range, the engine may not receive the right amount of fuel, leading to decreased fuel efficiency.
  3. Engine misfires: Improper fuel delivery can result in engine misfires, causing rough idling and poor performance.
  4. Check Engine Light: The P1235 Ford code will trigger the Check Engine Light to illuminate on the dashboard, indicating a problem with the fuel pump control circuit.

How to Fix P1235 Ford

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the fuel pump control circuit, fuel pump, driver module, and wiring.
  2. Replace the fuel pump: If the fuel pump is found to be faulty, it will need to be replaced with a new one.
  3. Replace the fuel pump driver module: If the driver module is causing the issue, it will need to be replaced.
  4. Repair or replace wiring: Address any wiring issues by repairing or replacing damaged wires to ensure proper connectivity.
  5. Reset the ECM: After the repair is completed, reset the ECM to clear the trouble code and monitor the system for any reoccurrence of the issue.

Cost to Fix P1235 Ford

The cost of repairing a fuel pump control out of range issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, the cost of replacing a fuel pump can range from $300 to $800, while replacing a fuel pump driver module can cost between $150 to $400. Wiring repairs or replacements can add additional costs to the repair. Overall, the total repair cost, including parts and labor, can range from $500 to $1500. It's recommended to get a detailed quote from a trusted auto repair shop to get an accurate estimate based on your vehicle's make and model. Labor rates at auto repair shops can vary, so it's essential to inquire about specific rates before proceeding with the repair.

What does this mean?

Tech Notes for P1235 Ford

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.





User Submitted Video

Need more information about the P1235 Ford code?

Need more information on how to fix the P1235 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1235 Ford code diagnosed by a professional: Find a repair shop in your area

Information for Specific Ford Models

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 Ford Code

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

P1235 indicates an issue with the Fuel Pump Driver Module (FPDM) detecting an out-of-range signal, which may affect fuel pump operation.

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

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

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

Common causes include a faulty Fuel Pump Driver Module (FPDM), damaged wiring or connectors, a failing fuel pump, or a PCM (Powertrain Control Module) issue.

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

Yes, a failing fuel pump that draws abnormal current or has irregular operation can cause this code.

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

Start by inspecting the FPDM, wiring, and connectors for damage. Use a multimeter to test for proper voltage and continuity, and check fuel pump operation.

6. Can I drive my Ford with the P1235 code active?

It’s not recommended, as the issue can lead to engine stalling or failure to start, potentially leaving you stranded.

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

Repairs may involve replacing the Fuel Pump Driver Module, repairing or replacing damaged wiring, or replacing the fuel pump if it’s faulty.

8. Where is the Fuel Pump Driver Module located in a Ford vehicle?

The FPDM is typically located near the fuel tank or on the rear frame rail, but exact placement may vary by model.

9. Can a bad ground connection cause the P1235 code?

Yes, poor ground connections can lead to communication issues between the FPDM and the PCM, triggering the code.

10. Does the P1235 code always mean the FPDM is faulty?

No, while the FPDM is a common cause, the issue could also stem from wiring problems, a bad fuel pump, or a PCM-related issue. Proper diagnosis is essential.

Discuss the causes and fixes for P1235 Ford OBDII Code

Submit a New Comment

  • i have P1235 code fuel pump have replace and fuel pump driver control module still no start but engine crank.

    Reply to Comment

  • What model an year is your Ford?

    Reply to Comment

  • I got code p1235 Code on a 02 Ford Taurus and I change the fuel pump driver control module still won't start

    Reply to Comment

  • Do you have fuel pressure at the engine compartment?

    Reply to Comment

  • No I don't have fuel at all

    Reply to Comment

  • i have a 2007 ford f150 fx 2 sport was driving it the other day and it was raining and it just died now all it does is roll over . i bypassed the air conditioner and now it only rolls no start. can someone help me
    please????

    Reply to Comment

  • If the engine is not starting and you have the P1235 code, then the most likely cause is the Fuel Pump Drive Module (FPDM).

    Reply to Comment

  • I have an 03 Mercury Grand Marquis 4.6 L. It has a p1235 code. It starts and runs and drives just fine . Why am I getting this code? I just replaced the fuel filter and the light came on. The filter is installed correctly.

    Reply to Comment

  • Do you have any other symptoms? if you don't, then you could just clear the code. It's common the set the P1235 right after replacing the fuel filter.

    Reply to Comment

  • I have an 07 Ford Five Hundred that's got a P1235 code. The car starts without issue but when it's hot it struggles when I lift off the gas and will shut off while driving if I don't press on the gas soon enough. The mass air flow sensor was just replaced but then this code popped up and the car is still struggling when hot and shutting off. Do I just need to replace the FPDM or do a whole new fuel pump too?

    Reply to Comment

  • Unfortunately I haven't had that problem, but according to a national database of repairs, the Fuel Pump Drive Module (FPDM) is the most common cause of the problem.

    Reply to Comment