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P1238 2010 Ford Fusion Code - Fuel Pump Secondary Circuit Fault

Quick Answer

The P1238 diagnostic trouble code (DTC) for a 2010 Ford Fusion indicates a Fuel Pump Secondary Circuit Fault. Common causes include Faulty fuel pump relay: A malfunctioning relay can prevent the fuel pump from receiving power, Damaged fuel pump driver module: The driver module controls the fuel pump's operation and can fail over time, Wiring issues: Corrosion, frayed wires, or loose connections can disrupt the fuel pump's electrical circuit. 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
P1238 2010 Ford Fusion indicates Fuel Pump Secondary Circuit Fault.
Common causes
Common causes include Faulty fuel pump relay: A malfunctioning relay can prevent the fuel pump from receiving power, Damaged fuel pump driver module: The driver module controls the fuel pump's operation and can fail over time, Wiring issues: Corrosion, frayed wires, or loose connections can disrupt the fuel pump's electrical circuit.
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 P1238 2010 Ford Fusion Description

The P1238 diagnostic trouble code (DTC) for a 2010 Ford Fusion indicates a Fuel Pump Secondary Circuit Fault. This code is triggered when the powertrain control module (PCM) detects an issue with the secondary circuit of the fuel pump. The fuel pump is responsible for delivering fuel from the gas tank to the engine, and any fault in its secondary circuit can lead to significant performance issues.

OBDII Code P1238 2010 Ford Fusion - Fuel Pump Secondary Circuit Fault
P1238 2010 Ford Fusion Code - Fuel Pump Secondary Circuit Fault

Common Causes of P1238 2010 Ford Fusion

  1. Faulty fuel pump relay: A malfunctioning relay can prevent the fuel pump from receiving power.
  2. Damaged fuel pump driver module: The driver module controls the fuel pump's operation and can fail over time.
  3. Wiring issues: Corrosion, frayed wires, or loose connections can disrupt the fuel pump's electrical circuit.
  4. Malfunctioning PCM: The PCM may not be sending the correct signals to the fuel pump, leading to a circuit fault.

Symptoms of P1238 2010 Ford Fusion

  1. Hard starting: Difficulty starting the engine, especially after the vehicle has been sitting for a while.
  2. Stalling: The engine may stall unexpectedly while driving or idling.
  3. Hesitation: The vehicle may hesitate or jerk during acceleration.
  4. Engine misfires: The engine may misfire due to insufficient fuel delivery.
  5. Check Engine Light: The Check Engine Light may illuminate on the dashboard.

How to Fix P1238 2010 Ford Fusion

  1. Diagnose the issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the fuel pump circuit.
  2. Test the fuel pump relay: Check the relay for proper operation and replace if necessary.
  3. Inspect the fuel pump driver module: Test the module for faults and replace if it is not functioning correctly.
  4. Check wiring and connections: Inspect the wiring harness for damage or corrosion, and repair or replace as needed.
  5. Clear the DTC: Once the repair is complete, clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1238 2010 Ford Fusion

The typical repair costs for a Fuel Pump Secondary Circuit Fault can vary depending on the specific cause of the issue. In general, replacing a faulty fuel pump relay or driver module can cost between $100 to $300, including parts and labor. If wiring repairs are needed, additional costs may apply. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific diagnosis and repair required. Keep in mind that labor rates can vary between $80 to $150 per hour, so it's essential to consider these factors when estimating the total repair cost.

When is the Code Detected?

Fuel pump driver module has detected a fault in the fuel pump secondary circuit

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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 P1238 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code P1238 in a 2010 Ford Fusion?

The common symptoms include engine stalling, rough idling, difficulty starting the vehicle, and a possible lack of power while driving.

2. What does the OBDII code P1238 on a 2010 Ford Fusion indicate?

OBDII code P1238 signifies a Fuel Pump Secondary Circuit Fault in the vehicle.

3. What are the possible causes of the OBDII code P1238 in a 2010 Ford Fusion?

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

4. How can I diagnose the Fuel Pump Secondary Circuit Fault in my 2010 Ford Fusion?

Diagnosing this issue involves checking the fuel pump driver module for proper operation, inspecting the wiring and connectors for any damage, and testing the fuel pump itself for functionality.

5. Can I continue driving my 2010 Ford Fusion with the P1238 code?

It is not recommended to continue driving the vehicle with the P1238 code, as it can lead to potential fuel delivery issues and engine performance problems.

6. How can I repair the Fuel Pump Secondary Circuit Fault in my 2010 Ford Fusion?

Repairing the issue involves replacing the faulty fuel pump driver module, repairing any damaged wiring or connectors, or installing a new fuel pump if necessary.

7. Will resetting the OBDII code P1238 in my 2010 Ford Fusion make the issue go away?

Resetting the code may temporarily clear the Check Engine Light, but it will not fix the underlying issue causing the Fuel Pump Secondary Circuit Fault.

8. How much does it cost to repair the Fuel Pump Secondary Circuit Fault in a 2010 Ford Fusion?

The cost of repair can vary depending on the exact cause of the issue, but it typically involves parts and labor expenses for replacing the fuel pump driver module or fuel pump.

9. Can a DIY enthusiast fix the Fuel Pump Secondary Circuit Fault in a 2010 Ford Fusion?

While some experienced DIY enthusiasts may be able to diagnose and repair this issue, it is recommended to consult a professional mechanic due to the complexity of the fuel system.

10. How often does the Fuel Pump Secondary Circuit Fault occur in a 2010 Ford Fusion?

The occurrence of the P1238 code can vary depending on the vehicle's maintenance history and driving conditions, but it is not an extremely common issue in the 2010 Ford Fusion.

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