AutoCodes – Ford – P0231 2007 Ford Fusion

P0231 2007 Ford Fusion Code - Fuel Pump Secondary Circuit Low

Quick Answer

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit. Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay. 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 2007 Ford Fusion indicates Fuel Pump Secondary Circuit Low.
Common causes: Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay.
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 4,109

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 Apr 13, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0231 2007 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit. The test fails if the PCM commands the fuel pump ON and B+ voltage is not detected on the FPM circuit.

OBDII Code P0231 2007 Ford Fusion - Fuel Pump Secondary Circuit Low - AutoCodes.com — P0231 2007 Ford Fusion Code - Fuel Pump Secondary Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0231 2007 Ford Fusion?

Blown Fuel Pump fuse
Open Fuel Pump Monitor Circuit
Faulty Fuel Pump Relay
Damaged Engine Control Module (ECM)

How to Fix the DTC P0231 2007 Ford Fusion?

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

For some FORD models:
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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0231 2007 Ford Fusion 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 P0231 2007 Ford Fusion code?

Need more information on how to fix the P0231 2007 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0231 2007 Ford Fusion code diagnosed by a professional: Find a repair shop in your area

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 P0231 2007 Ford Fusion Code

1. What are the common symptoms of OBDII code P0231 on a 2007 Ford Fusion?

The common symptoms include engine stalling, difficulty starting the vehicle, and a decrease in fuel efficiency.

2. What does the OBDII code P0231 on a 2007 Ford Fusion mean?

The code indicates a potential issue with the fuel pump secondary circuit being lower than expected.

3. What are the possible causes of OBDII code P0231 on a 2007 Ford Fusion?

Possible causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a blown fuse related to the fuel pump, or a problem with the fuel pump relay.

4. How can I diagnose the reason behind OBDII code P0231 on my 2007 Ford Fusion?

You can use a scan tool to check for other related codes, visually inspect the wiring and connectors for any damage, test the fuel pump relay, and perform a fuel pressure test to determine the cause of the issue.

5. Can I continue driving my 2007 Ford Fusion with OBDII code P0231?

It is not recommended to continue driving the vehicle with this code, as it can lead to further damage to the fuel system and potential safety hazards.

6. How can I repair OBDII code P0231 on a 2007 Ford Fusion?

Repair options include replacing the fuel pump if it is faulty, repairing or replacing damaged wiring or connectors, checking and replacing any blown fuses, and testing or replacing the fuel pump relay.

7. Is it possible to reset OBDII code P0231 on a 2007 Ford Fusion without making any repairs?

While clearing the code temporarily may be possible, it is essential to address the underlying issue to prevent the code from reoccurring.

8. Can a DIY enthusiast fix OBDII code P0231 on a 2007 Ford Fusion?

Depending on their skill level, a DIY enthusiast may be able to diagnose and repair this code by following a repair manual and using the appropriate tools.

9. How much does it typically cost to repair OBDII code P0231 on a 2007 Ford Fusion?

The cost of repairs can vary based on the root cause of the issue, but it may range from $200 to $800, including parts and labor.

10. Will OBDII code P0231 on a 2007 Ford Fusion affect the vehicle's performance?

Yes, this code can affect the vehicle's performance by causing engine stalling, difficulty starting, and decreased fuel efficiency due to potential issues with the fuel pump secondary circuit.