Engine-CodesFord – P0391 2006 Ford Fusion

P0391 2006 Ford Fusion Code - Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2

Quick Answer

The P0391 code for a 2006 Ford Fusion indicates an issue with the Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2. Common causes include Faulty camshaft position sensor, Damaged wiring or connectors in the sensor circuit, Issues with the ECM. 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
P0391 2006 Ford Fusion indicates Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2.
Common causes
Common causes include Faulty camshaft position sensor, Damaged wiring or connectors in the sensor circuit, Issues with the ECM.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0391 2006 Ford Fusion Description

The P0391 code for a 2006 Ford Fusion indicates an issue with the Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2. The camshaft position sensor is a crucial component in the engine's operation as it monitors the position of the camshaft and sends this information to the engine control module (ECM). This data is essential for the ECM to determine the correct fuel injection timing and ignition timing.

OBDII Code P0391 2006 Ford Fusion - Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2
P0391 2006 Ford Fusion Code - Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2

Common Causes of P0391 2006 Ford Fusion

  1. Faulty camshaft position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Issues with the ECM
  4. Incorrect camshaft timing
  5. Engine overheating causing sensor malfunction

Symptoms of P0391 2006 Ford Fusion

  1. Check engine light illuminated on the dashboard
  2. Rough idling or engine stalling
  3. Decreased fuel efficiency
  4. Engine misfires
  5. Difficulty starting the engine

How to Fix P0391 2006 Ford Fusion

  1. Use a diagnostic scanner to retrieve the trouble code and confirm the issue.
  2. Inspect the camshaft position sensor and its wiring for any visible damage or corrosion.
  3. Test the sensor's operation using a multimeter to ensure it is functioning correctly.
  4. Replace the camshaft position sensor if it is found to be faulty.
  5. Clear the trouble code from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0391 2006 Ford Fusion

The cost of repairing a P0391 code on a 2006 Ford Fusion can vary depending on the exact cause of the issue. Typically, the cost of a new camshaft position sensor ranges from $50 to $150, while labor costs at an auto repair shop can range from $100 to $300. Therefore, the total repair cost could amount to around $150 to $450. It is important to note that these are rough estimates and actual costs may vary based on factors such as location, labor rates, and additional repairs needed. It is recommended to obtain quotes from local repair shops for a more accurate estimate.

Tech Notes for P0391 2006 Ford Fusion

Sometimes and in some models, low battery voltage or a weak starter can trigger a Camshaft Position Sensor code.

When is the Code Detected?

The camshaft position sensor signal sent to the Engine Control Module (ECM) during the first few seconds of engine cranking is out of range.

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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 P0391 2006 Ford Fusion Code

1. What are the common symptoms of OBDII code P0391 in a 2006 Ford Fusion?

- Common symptoms include engine misfires, rough idling, decreased fuel efficiency, and potential stalling while driving.

2. What does the OBDII code P0391 indicate in a 2006 Ford Fusion?

- The code indicates an issue with the Camshaft Position Sensor 'B' Circuit Range/Performance Bank 2.

3. What are the possible causes of OBDII code P0391 in a 2006 Ford Fusion?

- Possible causes include a faulty camshaft position sensor, wiring or connector issues, timing belt problems, or an issue with the engine control module.

4. How can I diagnose the cause of OBDII code P0391 in my 2006 Ford Fusion?

- Diagnosing the issue may involve using a scan tool to check for the code, inspecting the camshaft position sensor and its wiring, and testing the sensor's functionality.

5. Can I still drive my 2006 Ford Fusion with OBDII code P0391 present?

- It is not recommended to drive your vehicle with this code present, as it can lead to further engine damage and potential safety hazards.

6. How can I repair OBDII code P0391 in my 2006 Ford Fusion?

- Repair may involve replacing the camshaft position sensor, repairing any wiring or connector issues, or addressing any underlying timing belt problems.

7. Is it possible to reset OBDII code P0391 in a 2006 Ford Fusion without fixing the issue?

- While you can clear the code with a scan tool, it is important to address the underlying problem to prevent further issues.

8. Can a DIY enthusiast fix OBDII code P0391 in a 2006 Ford Fusion?

- Depending on your skill level and access to tools, DIY repair is possible for some aspects of this issue, such as replacing the camshaft position sensor.

9. Are there any recalls related to OBDII code P0391 in the 2006 Ford Fusion?

- It is recommended to check with the manufacturer or a Ford dealership to see if there are any recalls related to this specific OBDII code in your vehicle.

10. How can regular maintenance help prevent OBDII code P0391 in a 2006 Ford Fusion?

- Regular maintenance, including timely replacement of the camshaft position sensor and inspection of related components, can help prevent issues that may trigger this OBDII code.

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