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Engine-Codes – GMC – P2C0A 2020 GMC Sierra

P2C0A 2020 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 2 Performance

Quick Answer

The P2C0A code indicates a performance issue with the Intake Camshaft Profile Actuator Position Sensor 2 in GMC vehicles. Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Intake Camshaft Profile Actuator circuit poor electrical connection. 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
P2C0A 2020 GMC Sierra indicates Intake Camshaft Profile Actuator Position Sensor 2 Performance.
Common causes
Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Intake Camshaft Profile Actuator circuit poor electrical connection.
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 May 29, 2026
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Code P2C0A 2020 GMC Sierra Description

The P2C0A code indicates a performance issue with the Intake Camshaft Profile Actuator Position Sensor 2 in GMC vehicles. This sensor is crucial for the Engine Control Module (ECM) as it monitors the position of the actuator pins that adjust the camshaft profile sleeve. The camshaft profile actuator plays a vital role in optimizing engine performance by allowing the engine to switch between different camshaft profiles, such as high-lift and low-lift modes, which can enhance power delivery, fuel efficiency, and emissions control. The sensor utilizes Hall-effect technology to provide real-time feedback on the actuator's position, allowing the ECM to make necessary adjustments based on driving conditions.
OBDII Code P2C0A 2020 GMC Sierra - Intake Camshaft Profile Actuator Position Sensor 2 Performance
P2C0A 2020 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 2 Performance

Common Causes of P2C0A 2020 GMC Sierra

  1. Faulty Intake Camshaft Profile Actuator
  2. Intake Camshaft Profile Actuator harness is open or shorted
  3. Intake Camshaft Profile Actuator circuit poor electrical connection
  4. Faulty Engine Control Module (ECM)
  5. Contaminated or damaged actuator pin preventing proper movement

Symptoms of P2C0A 2020 GMC Sierra

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Reduced engine power or sluggish acceleration
  3. Poor fuel economy and increased emissions
  4. Rough idling or stalling during operation
  5. Unusual engine noises, such as knocking or ticking sounds

How to Fix P2C0A 2020 GMC Sierra

  1. Perform a visual inspection of the Intake Camshaft Profile Actuator and its wiring harness for any signs of damage or wear.
  2. Test the Intake Camshaft Profile Actuator Position Sensor using a multimeter to check for proper voltage and resistance values.
  3. Inspect and repair any poor electrical connections or short circuits in the actuator circuit.
  4. If necessary, replace the faulty Intake Camshaft Profile Actuator or the Position Sensor.
  5. Clear the diagnostic trouble codes and perform a road test to ensure the issue has been resolved and monitor for any reoccurrence of the code.

Cost to Fix P2C0A 2020 GMC Sierra

The cost to diagnose and repair the P2C0A code can vary significantly based on the specific issue and the vehicle model. Typically, parts such as the Intake Camshaft Profile Actuator or Position Sensor may range from $100 to $300, while labor costs can range from $80 to $150 per hour, depending on the shop's location and reputation. Overall, total repair costs can range from $200 to $800, depending on whether additional repairs or parts are required. Dealerships may charge higher rates, while independent shops often provide more competitive pricing.

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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.

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