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

Quick Answer

The P0315 diagnostic trouble code (DTC) for the 2014 Chevrolet Silverado refers to the Crankshaft Position System Variation Not Learned. Common causes include Faulty crankshaft position sensor, PCM software issue, Wiring/connectors issues. 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 Faulty crankshaft position sensor, PCM software issue, Wiring/connectors issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0315 2014 Chevrolet Silverado Description

The P0315 diagnostic trouble code (DTC) for the 2014 Chevrolet Silverado refers to the Crankshaft Position System Variation Not Learned. This code indicates that the PCM (Powertrain Control Module) has detected that the crankshaft position system variation values have not been learned. The crankshaft position sensor is responsible for monitoring the position and speed of the crankshaft, which is crucial for proper engine operation. When the variation values are not learned, it can lead to issues with engine performance, fuel efficiency, and overall drivability.

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

Common Causes of P0315 2014 Chevrolet Silverado

  1. Faulty crankshaft position sensor
  2. PCM software issue
  3. Wiring/connectors issues
  4. Mechanical problems within the engine
  5. Poor battery voltage or connection

Symptoms of P0315 2014 Chevrolet Silverado

  1. Rough idling
  2. Engine misfires
  3. Poor acceleration
  4. Engine stalling
  5. Check engine light illuminated

How to Fix P0315 2014 Chevrolet Silverado

  1. Diagnose the root cause of the issue using a scan tool to check for stored codes and live data related to the crankshaft position system.
  2. Inspect the crankshaft position sensor, wiring, and connectors for any damage or loose connections. Replace or repair as necessary.
  3. Perform a crankshaft position system variation relearn procedure using a scan tool to reset the values and allow the PCM to learn the correct parameters.
  4. Clear the DTC and test drive the vehicle to ensure that the symptoms have been resolved.
  5. If the issue persists, further diagnosis may be required to identify any underlying mechanical problems within the engine.

Cost to Fix P0315 2014 Chevrolet Silverado

The cost estimate for resolving a P0315 DTC on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. Typically, the cost of replacing a faulty crankshaft position sensor can range from $100 to $300, including parts and labor. Diagnostic fees may also apply, with rates typically ranging from $80 to $150 per hour at most auto repair shops. It is advisable to consult with a certified mechanic to obtain an accurate cost estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for P0315 2014 Chevrolet Silverado

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.

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, it’s best to address the issue promptly to avoid performance problems and potential long-term engine damage.

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