P0391 2007 Ford Fusion Code - Camshaft Position Sensor 'B' Circuit Range/Performance 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
- P0391 2007 Ford Fusion indicates Camshaft Position Sensor 'B' Circuit Range/Performance 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.
Code P0391 2007 Ford Fusion Description
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.
What are the Possible Causes of the DTC P0391 2007 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 P0391 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0391 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.
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Frequently Asked Questions about P0391 2007 Ford Fusion Code
1. What does the OBDII code P0391 mean on a 2007 Ford Fusion?
P0391 indicates an issue with the Camshaft Position Sensor 'B' Circuit Range/Performance on Bank 2, meaning the signal from the sensor is outside the expected range.
2. What are the symptoms of code P0391 in a 2007 Ford Fusion?
Common symptoms include rough idling, poor acceleration, stalling, reduced fuel efficiency, and the Check Engine Light illuminating.
3. What causes the P0391 code in a 2007 Ford Fusion?
Possible causes include a faulty camshaft position sensor, damaged wiring or connectors, a timing chain/belt issue, or a malfunctioning PCM (Powertrain Control Module).
4. How do I diagnose the P0391 code on a 2007 Ford Fusion?
Start by inspecting the camshaft position sensor, wiring, and connectors for damage. Use a multimeter to test the sensor and check for proper voltage. Verify timing chain alignment if needed.
5. Can I drive my 2007 Ford Fusion with a P0391 code?
While it may be drivable, driving with this code can lead to poor performance and potential engine damage. It's best to address the issue promptly.
6. How do I fix the P0391 code on my 2007 Ford Fusion?
Repairs may include replacing the camshaft position sensor, fixing damaged wiring or connectors, addressing timing component issues, or reprogramming the PCM if necessary.
7. Where is the Camshaft Position Sensor 'B' located on a 2007 Ford Fusion?
The Camshaft Position Sensor 'B' is located on Bank 2, which is the side of the engine opposite the #1 cylinder. Refer to your vehicle’s manual for exact placement.
8. How much does it cost to fix a P0391 code on a 2007 Ford Fusion?
Repair costs can vary. Replacing a camshaft position sensor typically costs between $100 and $300, including parts and labor, but more extensive repairs like timing adjustments can cost more.
9. Could a bad crankshaft position sensor cause a P0391 code?
While a bad crankshaft position sensor is not the direct cause, it could cause similar symptoms and should be tested if other components check out.
10. How can I prevent the P0391 code from recurring on my 2007 Ford Fusion?
Regular maintenance, including timely inspection of sensors, wiring, and the timing system, can help prevent this code from recurring. Keep the electrical system in good condition.
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