AutoCodes – Chevrolet – P0315 2014 Chevrolet Silverado

P0315 2014 Chevrolet Silverado Code - Crankshaft Position System Variation Not Learned

Quick Answer

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. Common causes include Crankshaft Position (CKP) system variation learning, Faulty Crankshaft Position, Crankshaft Position sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0315 2014 Chevrolet Silverado indicates Crankshaft Position System Variation Not Learned.
Common causes: Common causes include Crankshaft Position (CKP) system variation learning, Faulty Crankshaft Position, Crankshaft Position sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,753

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 13, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0315 2014 Chevrolet Silverado Description

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.

OBDII Code P0315 2014 Chevrolet Silverado - Crankshaft Position System Variation Not Learned - AutoCodes.com — P0315 2014 Chevrolet Silverado Code - Crankshaft Position System Variation Not Learned

What does this mean?

What are the Possible Causes of the DTC P0315 2014 Chevrolet Silverado?

Crankshaft Position (CKP) system variation learning
Faulty Crankshaft Position
Crankshaft Position sensor harness is open or shorted
Crankshaft Position sensor circuit poor electrical connection

How to Fix the DTC P0315 2014 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

The crankshaft position (CKP) system variation learn procedure is done better with a scan tool, but if the Crankshaft Variation Relearn is not accessible through your scan tool (some truck applications 1998 & later), perform the relearn in the following manner:

1. Turn off all the accessories. With the Air temperature sensor and Coolant temperature within 5 degrees (Centigrade) of each other, start the engine and let it idle in Park or Neutral for two minutes.
2. Accelerate the vehicle to 55 mph at part throttle. Cruise at 55 mph for 8- 10 minutes until the engine reaches operating temperature.
3. Cruise at 55 mph for another 5-6 minutes.
4. Decelerate to 45 mph without braking and maintain 45 mph for 1 minute.
5. Perform 4 deceleration cycles, without using the brakes, of 25 seconds each where no specific speed is necessary. Returning to 45 mph for 15 seconds in between deceleration cycles.
6. Accelerate to 55 mph and cruise for 2 minutes.
7. Stop the vehicle and idle for 2 minutes with the brake applied and the transmission in Drive (automatic trans.) or Neutral (manual trans.) with the clutch depressed.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0315 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0315 2014 Chevrolet Silverado code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0315 2014 Chevrolet Silverado Code

1. What does OBDII code P0315 mean on a 2014 Chevrolet Silverado?

Code P0315 indicates that the crankshaft position system variation has not been learned by the engine control module (ECM), which is necessary for proper engine timing.

2. What are the common symptoms of code P0315 on a 2014 Chevrolet Silverado?

Symptoms may include a check engine light, rough idling, poor acceleration, decreased fuel efficiency, or potential misfires.

3. What causes code P0315 to trigger on a 2014 Chevrolet Silverado?

Common causes include a recent battery disconnect, replacement of the crankshaft position sensor, ECM updates, or issues with the crankshaft position sensor or reluctor wheel.

4. Can code P0315 harm my 2014 Chevrolet Silverado if left unresolved?

While it may not cause immediate damage, unresolved timing issues could lead to poor performance, increased emissions, and potential damage to engine components over time.

5. How is code P0315 diagnosed on a 2014 Chevrolet Silverado?

A mechanic will use a scan tool to verify the code, check for related codes, inspect the crankshaft position sensor and wiring, and confirm if a crankshaft position variation relearn is needed.

6. How can I fix code P0315 on a 2014 Chevrolet Silverado?

Perform a crankshaft position variation relearn procedure using a compatible scan tool. If the issue persists, inspect and replace faulty components like the crankshaft position sensor or related wiring.

7. Do I need special tools to fix code P0315 on a 2014 Chevrolet Silverado?

Yes, a professional-grade scan tool with the capability to perform a crankshaft position variation relearn is required to resolve this code.

8. Can a dead or disconnected battery cause code P0315 on a 2014 Chevrolet Silverado?

Yes, disconnecting or replacing the battery can reset the ECM, requiring the crankshaft position variation relearn procedure to be performed.

9. How much does it cost to fix code P0315 on a 2014 Chevrolet Silverado?

The cost can range from $50 to $150 if a relearn procedure is needed, but additional repairs for sensor or wiring issues may increase the cost.

10. Can I drive my 2014 Chevrolet Silverado with code P0315 active?

While the vehicle may still be drivable, itâ€™s best to address the issue promptly to avoid performance problems and potential long-term engine damage.