Crankshaft Position System Variation Not Learned
The PCM has not yet learned the crankshaft position variation table required for accurate misfire detection. After flywheel/sensor replacement or PCM relearn, a procedure must be performed (typically deceleration from a defined RPM with closed throttle).
Affected components
- Crankshaft position sensor
- Flywheel
- Powertrain control module
Common causes
- High likelihood: Relearn procedure not yet performed
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.