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P0315 - Crankshaft Position System Variation Not Learned

Possible causes
- 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
What does this mean? What does this mean?
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 does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine fails to start
- Engine runs rough
P0315 Description

The Crankshaft Position (CKP) sensor signal is monitored by the Engine Control Module (ECM) for errors. The P0315 code is set when ECM is unable to learn and correct for mechanical inaccuracies in crankshaft pulse wheel tooth spacing.

P0315 Information for specific makes
P0315 BUICK Crankshaft Position System Variation Not Learned
P0315 CADILLAC Crankshaft Position System Variation Not Learned
P0315 CHEVROLET Crankshaft Position System Variation Not Learned
P0315 CHRYSLER No Crank Sensor Learned
P0315 DODGE No Crank Sensor Learned
P0315 FORD Crankshaft Position System Variation Not Learned
P0315 GMC Crankshaft Position System Variation Not Learned
P0315 HYUNDAI Segment Time Acquistion Incorrect
P0315 ISUZU Crankshaft Position System Variation Not Learned
P0315 JEEP No Crank Sensor Learned
P0315 KIA Segment Time Acquisition Incorrect
P0315 MAZDA Powertrain Control Module Crankshaft Sensor Learn Ability Disabled
P0315 MITSUBISHI No Crank Sensor Learned
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