Engine-Codes - Generic - P0315

P0315 Code - Crankshaft Position System Variation Not Learned

- Code Popularity: 107,109 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0315?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Crankshaft Position (CKP) system variation learning
  • Faulty Crankshaft Position
  • Crankshaft Position sensor harness is open or shorted
  • Crankshaft Position sensor circuit poor electrical connection

Code Tech Notes

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

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How to Fix the DTC P0315?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0315 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine fails to start
  • Engine runs rough

What Does the P0315 Code Mean?

The Crankshaft Position (CKP) system variation learns feature is used to calculate reference period errors caused by slight tolerance variations in the crankshaft, and the CKP sensor. The calculated error allows the Engine Control Module (ECM) to accurately compensate for reference period variations. This enhances the ability of the ECM to detect misfire events over a wider range of engine speed and load.
The CKP system variation compensating values are stored in ECM memory after a learning procedure has been performed and the ignition switch is turned to the OFF position for at least 30 seconds. If the actual CKP variation is not within the CKP system variation compensating values stored in the ECM, DTC P0300 may be set.
If the CKP system variation values are not stored in the ECM memory or a proper ECM power-down does not occur after completing the CKP Learn Procedure, DTC P0315 sets.
P0315 Code - Crankshaft Position System Variation Not Learned

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