AutoCodes – Ford – P0315 2008 Ford Fusion

P0315 2008 Ford Fusion Code - Crankshaft Position System Variation Not Learned

Quick Answer

The Powertrain Control Module (PCM) is unable to learn and correct for mechanical inaccuracies in crankshaft pulse wheel tooth spacing. Common causes include Faulty Crankshaft Position (CKP), Crankshaft Position (CKP) sensor harness is open or shorted, Crankshaft Position (CKP) 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: P0315 2008 Ford Fusion indicates Crankshaft Position System Variation Not Learned.
Common causes: Common causes include Faulty Crankshaft Position (CKP), Crankshaft Position (CKP) sensor harness is open or shorted, Crankshaft Position (CKP) 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.

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Code Popularity 2,771

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0315 2008 Ford Fusion Description

The Powertrain Control Module (PCM) is unable to learn and correct for mechanical inaccuracies in crankshaft pulse wheel tooth spacing. This DTC disables the misfire monitor.

OBDII Code P0315 2008 Ford Fusion - Crankshaft Position System Variation Not Learned - AutoCodes.com — P0315 2008 Ford Fusion Code - Crankshaft Position System Variation Not Learned

What does this mean?

What are the Possible Causes of the DTC P0315 2008 Ford Fusion?

Faulty Crankshaft Position (CKP)
Crankshaft Position (CKP) sensor harness is open or shorted
Crankshaft Position (CKP) sensor circuit poor electrical connection
Damaged crankshaft pulse wheel teeth

How to Fix the DTC P0315 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.

What does this mean?

Code Tech Notes

Visual inspection of the Crankshaft Position (CKP) sensor and crankshaft pulse wheel teeth for damage. If crankshaft teethes are OK, replaced the Crankshaft Position sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0315 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 P0315 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 P0315 2008 Ford Fusion Code

1. What does OBDII code P0315 mean on a 2008 Ford Fusion?

- OBDII code P0315 indicates that the Crankshaft Position System Variation Not Learned.

2. What are the common symptoms of OBDII code P0315 on a 2008 Ford Fusion?

- Common symptoms include rough idling, stalling, difficulty starting the engine, and decreased fuel efficiency.

3. What causes the OBDII code P0315 to trigger on a 2008 Ford Fusion?

- The code P0315 is typically triggered by a discrepancy in the crankshaft position system variation, which may be caused by a faulty sensor, wiring issues, or an ECM/PCM programming error.

4. How can I diagnose OBDII code P0315 on my 2008 Ford Fusion?

- Diagnosis usually involves checking the crankshaft position sensor, inspecting the wiring for any damage, and performing a relearn procedure using a diagnostic scan tool.

5. Can I drive my 2008 Ford Fusion with OBDII code P0315?

- It is not recommended to drive your vehicle with the code P0315 as it can lead to further engine damage and potential safety hazards.

6. How can I repair OBDII code P0315 on my 2008 Ford Fusion?

- Repairing the code may involve replacing the crankshaft position sensor, repairing any damaged wiring, and performing a relearn procedure to reset the system variation.

7. Can I reset OBDII code P0315 on my 2008 Ford Fusion without fixing the issue?

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

8. Is OBDII code P0315 a common issue in 2008 Ford Fusions?

- While not extremely common, OBDII code P0315 can occur in 2008 Ford Fusions due to sensor or programming issues.

9. How long does it take to repair OBDII code P0315 on a 2008 Ford Fusion?

- The repair time can vary depending on the exact cause of the code, but it typically takes a few hours to diagnose and fix the issue.

10. Can a DIY enthusiast fix OBDII code P0315 on a 2008 Ford Fusion?

- While some experienced DIY enthusiasts may be able to address the issue, it is recommended to seek professional help to properly diagnose and repair the code.