AutoCodes – Chevrolet – P0315 2018 Chevrolet Silverado

P0315 2018 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 2018 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 386

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 2018 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 2018 Chevrolet Silverado - Crankshaft Position System Variation Not Learned - AutoCodes.com — P0315 2018 Chevrolet Silverado Code - Crankshaft Position System Variation Not Learned

What does this mean?

What are the Possible Causes of the DTC P0315 2018 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 2018 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 2018 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 2018 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 2018 Chevrolet Silverado Code

1. What does the OBDII code P0315 mean for a 2018 Chevrolet Silverado?

The code P0315 indicates that the Crankshaft Position System Variation was not learned by the vehicle's computer.

2. What are the common symptoms of OBDII code P0315 in a 2018 Chevrolet Silverado?

Common symptoms include rough idling, engine stalling, poor acceleration, and potentially difficulty starting the vehicle.

3. What are the possible causes of OBDII code P0315 in a 2018 Chevrolet Silverado?

Possible causes include a faulty crankshaft sensor, issues with the timing belt or chain, wiring problems, or a malfunctioning engine control module.

4. How can I diagnose the OBDII code P0315 in my 2018 Chevrolet Silverado?

Diagnosis typically involves using a scan tool to retrieve the code, checking the crankshaft position sensor and related wiring, inspecting the timing components, and performing a system relearn procedure.

5. Can I still drive my 2018 Chevrolet Silverado with the OBDII code P0315 present?

It is not recommended to drive the vehicle with this code present, as it can lead to further engine issues and potential damage.

6. How can I repair the OBDII code P0315 in my 2018 Chevrolet Silverado?

Repair options may include replacing the crankshaft position sensor, addressing any wiring issues, ensuring proper timing belt/chain operation, or performing a system relearn procedure using a professional scan tool.

7. Is it safe to reset the OBDII code P0315 in my 2018 Chevrolet Silverado without addressing the underlying issue?

Resetting the code without fixing the root cause can lead to ongoing problems and potential safety hazards, so it is best to address the issue before clearing the code.

8. How long does it typically take to repair the OBDII code P0315 in a 2018 Chevrolet Silverado?

The repair time can vary depending on the specific cause of the code, but it may take anywhere from a few hours to a full day, especially if a system relearn procedure is required.

9. Can a DIY enthusiast fix the OBDII code P0315 issue in a 2018 Chevrolet Silverado?

While some aspects of diagnosing and repairing this code may be within the capabilities of a DIY enthusiast, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

10. Will the OBDII code P0315 cause permanent damage to my 2018 Chevrolet Silverado if left unaddressed?

Leaving the P0315 code unresolved can potentially cause further damage to the engine over time, so it is best to address the issue promptly to prevent more serious issues.