P0315 - Crankshaft Position System Variation Not Learned

The crankshaft variation relearn data has not been completed or is no longer valid.

Code Overview

The crankshaft variation relearn data has not been completed or is no longer valid.

Common Causes

• Battery disconnected or PCM reset
• Crankshaft relearn not performed
• Crank sensor or reluctor issue

Diagnostic Steps

1. Check whether a crank variation relearn is required
2. Inspect for crank sensor faults
3. Confirm no related timing or misfire faults are active

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.