AutoCodes – Ford – P0390 2008 Ford Fusion

P0390 2008 Ford Fusion Code - Camshaft Position Sensor 'B' Circuit Bank 2

Quick Answer

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection. 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
P0390 2008 Ford Fusion indicates Camshaft Position Sensor 'B' Circuit Bank 2.
Common causes
Common causes include Faulty Camshaft Position Sensor, Camshaft Position Sensor harness is open or shorted, Camshaft Position Sensor circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,698
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0390 2008 Ford Fusion Description

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Engine Control Module (ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.
When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing timing of cylinder identification signals.
OBDII Code P0390 2008 Ford Fusion - Camshaft Position Sensor 'B' Circuit Bank 2 - AutoCodes.com
P0390 2008 Ford Fusion Code - Camshaft Position Sensor 'B' Circuit Bank 2

What are the Possible Causes of the DTC P0390 2008 Ford Fusion?

  • Faulty Camshaft Position Sensor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection
  • Faulty starter motor
  • Starting system circuit
  • Dead (Weak) battery

How to Fix the DTC P0390 2008 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0390 2008 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 P0390 2008 Ford Fusion code?

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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 P0390 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P0390 on a 2008 Ford Fusion?

- Common symptoms include rough idling, engine misfires, poor acceleration, and in some cases, the engine may not start at all.

2. What does the OBDII code P0390 on a 2008 Ford Fusion indicate?

- This code indicates a problem with the Camshaft Position Sensor 'B' Circuit Bank 2.

3. What are the possible causes of OBDII code P0390 on a 2008 Ford Fusion?

- Possible causes include a faulty camshaft position sensor, wiring issues, poor electrical connections, or a problem with the engine control module.

4. How can I diagnose the issue causing OBDII code P0390 on my 2008 Ford Fusion?

- Diagnosing this issue typically involves checking the camshaft position sensor, inspecting the wiring and connections, and using a scan tool to monitor sensor data.

5. Can I still drive my 2008 Ford Fusion with OBDII code P0390?

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

6. How can I repair OBDII code P0390 on my 2008 Ford Fusion?

- Repairing this code may involve replacing the camshaft position sensor, repairing any damaged wiring, ensuring proper electrical connections, or reprogramming the engine control module.

7. Is it possible to reset OBDII code P0390 on a 2008 Ford Fusion without fixing the underlying issue?

- While you can clear the code with a scan tool, it will likely return until the underlying issue is addressed.

8. Are there any preventive measures to avoid OBDII code P0390 on a 2008 Ford Fusion?

- Regular maintenance, such as checking and replacing sensors as needed, can help prevent issues that lead to this code.

9. How much does it typically cost to repair OBDII code P0390 on a 2008 Ford Fusion?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Can I fix OBDII code P0390 on a 2008 Ford Fusion myself, or should I seek professional help?

- While some DIY enthusiasts may be able to address this issue themselves, it is recommended to seek professional help, especially if you are not experienced with automotive repairs.

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