P0315 2016 GMC Sierra 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 2016 GMC Sierra 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.
Code P0315 2016 GMC Sierra Description
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.
What are the Possible Causes of the DTC P0315 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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.
Code Tech Notes
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 2016 GMC Sierra 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.
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Frequently Asked Questions about P0315 2016 GMC Sierra Code
What does the OBDII code P0315 mean on a 2016 GMC Sierra?
1. P0315 indicates that the Crankshaft Position System Variation has not been learned by the vehicle's Engine Control Module (ECM). 2.
What are common symptoms of code P0315 on a 2016 GMC Sierra?
Symptoms may include an illuminated Check Engine Light, rough idling, poor acceleration, or reduced engine performance. 3.
What causes the P0315 code to appear on a 2016 GMC Sierra?
Common causes include a recent engine or crankshaft repair, a dead or disconnected battery, a faulty crankshaft position sensor, or issues with the ECM. 4.
Can I drive my 2016 GMC Sierra with the P0315 code active?
While the vehicle may be drivable, it could experience performance issues. It's best to address the problem promptly to avoid potential engine damage. 5.
How do I fix the P0315 code on a 2016 GMC Sierra?
The issue is typically resolved by performing a crankshaft position variation relearn procedure using a compatible scan tool. 6.
What tools are needed to fix the P0315 code on a 2016 GMC Sierra?
A diagnostic scan tool with relearn capabilities and software compatible with the 2016 GMC Sierra is required. 7.
Can a bad crankshaft position sensor cause the P0315 code?
Yes, a malfunctioning or improperly installed crankshaft position sensor can trigger the P0315 code. 8.
Does the P0315 code always require sensor replacement?
No, the issue often only requires the crankshaft variation relearn procedure. Sensor replacement is only necessary if the sensor is faulty. 9.
What should I do if the P0315 code reappears after a relearn procedure?
If the code returns, inspect the crankshaft position sensor, wiring, and ECM for defects or damage and repair or replace as needed. 10.
How much does it cost to fix the P0315 code on a 2016 GMC Sierra?
The cost varies depending on the repair. A relearn procedure performed at a repair shop typically costs $75–$150, while sensor replacement may cost $200–$400, including parts and labor.
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