OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P0315

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).

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 15

Possible causes

  • Relearn procedure not yet performed high

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 10–100 €
  • Estimated time: 0.2–1 h
  • Component: crankshaft position sensor
  • Component: flywheel
  • Component: powertrain control module
  • MIL / check engine light
  • emissions-relevant

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication