P0231 2006 Ford Fusion Code - Fuel Pump Secondary Circuit Low
Quick Answer
The P0231 code for a 2006 Ford Fusion indicates a problem with the fuel pump secondary circuit being low. Common causes include Faulty fuel pump relay, Damaged wiring harness, Short circuit in the fuel pump 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
- P0231 2006 Ford Fusion indicates Fuel Pump Secondary Circuit Low.
- Common causes
- Common causes include Faulty fuel pump relay, Damaged wiring harness, Short circuit in the fuel pump 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.
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Code P0231 2006 Ford Fusion Description
The P0231 code for a 2006 Ford Fusion indicates a problem with the fuel pump secondary circuit being low. This means that the voltage in the fuel pump secondary circuit is lower than the specified range. The fuel pump secondary circuit is responsible for providing power to the fuel pump relay, which in turn controls the fuel pump's operation. When this circuit is not functioning properly, it can result in a variety of issues related to the fuel delivery system.
Common Causes of P0231 2006 Ford Fusion
- Faulty fuel pump relay
- Damaged wiring harness
- Short circuit in the fuel pump circuit
- Malfunctioning fuel pump control module
- Corrosion or loose connections in the circuit
Symptoms of P0231 2006 Ford Fusion
- Engine misfires or hesitations
- Difficulty starting the vehicle
- Engine stalling
- Reduced fuel efficiency
- Illumination of the check engine light
How to Fix P0231 2006 Ford Fusion
- Diagnose the issue by using a scan tool to read the code and test the fuel pump secondary circuit for proper voltage.
- Inspect the wiring harness for any damage or corrosion and repair or replace as needed.
- Test the fuel pump relay and control module for proper operation and replace if faulty.
- Clear the code and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, consider replacing the fuel pump assembly.
Cost to Fix P0231 2006 Ford Fusion
The typical repair costs for resolving a P0231 code on a 2006 Ford Fusion can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, factors such as location, vehicle make and model, and engine type can also impact the overall cost of the repair.
Tech Notes for P0231 2006 Ford Fusion
1. Disconnect the inertia switch harness connector
2. Turn key to ON position (Engine OFF)
3. Measure voltage of circuit between inertia switch harness connector and ground
4. If battery voltage is found, replaced Inertia Switch
5. Clear codes.
When is the Code Detected?
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Frequently Asked Questions about P0231 2006 Ford Fusion Code
1. What does OBDII code P0231 mean for a 2006 Ford Fusion?
Code P0231 indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the fuel pump secondary circuit.
2. What are the common symptoms of code P0231?
Symptoms include engine stalling, no-start conditions, rough idling, and reduced engine performance.
3. What causes the P0231 code to appear?
Common causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump, or a malfunctioning PCM.
4. How can I diagnose code P0231 on my 2006 Ford Fusion?
Start by checking the fuel pump relay, inspecting the wiring and connectors for damage, and testing the fuel pump for proper operation. Use a multimeter to verify voltages in the circuit.
5. Can a bad fuel pump cause code P0231?
Yes, a failing or completely non-functional fuel pump can trigger this code due to insufficient voltage in the secondary circuit.
6. Is it safe to drive with code P0231?
It’s not recommended to drive with this code, as it can cause the engine to stall unexpectedly, leading to safety concerns or further damage.
7. How do you fix code P0231 on a 2006 Ford Fusion?
Repairs may include replacing the fuel pump relay, repairing or replacing damaged wiring, replacing the fuel pump, or reprogramming/replacing the PCM if necessary.
8. How much does it cost to repair a P0231 code?
The repair cost depends on the root cause. Relay or wiring repairs are typically inexpensive, while fuel pump replacement can cost $300–$800, including labor.
9. Can a blown fuse cause code P0231?
Yes, a blown fuse in the fuel pump circuit can cause low voltage and trigger the P0231 code.
10. How do I prevent code P0231 from reoccurring?
Regularly inspect and maintain the fuel pump circuit, including wiring, connectors, and relays, and address any issues as soon as they arise.
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