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P2C08 2021 Chevrolet Silverado Code - Intake Camshaft Profile Actuator Position Sensor 1 Circuit High Voltage

Quick Answer

The diagnostic trouble code P2C08 indicates a high voltage condition in the Intake Camshaft Profile Actuator Position Sensor 1 circuit. Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Intake Camshaft Profile Actuator circuit has poor electrical connections. 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
P2C08 2021 Chevrolet Silverado indicates Intake Camshaft Profile Actuator Position Sensor 1 Circuit High Voltage.
Common causes
Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Intake Camshaft Profile Actuator circuit has poor electrical connections.
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 P2C08 2021 Chevrolet Silverado Description

The diagnostic trouble code P2C08 indicates a high voltage condition in the Intake Camshaft Profile Actuator Position Sensor 1 circuit. This sensor is a critical component of the variable valve timing (VVT) system, which allows the engine to optimize its performance by adjusting the timing of the intake valves based on various operating conditions. The sensor utilizes Hall-effect technology to provide real-time feedback to the Engine Control Module (ECM) regarding the position of the actuator pins that control the camshaft profile sleeve. This information is essential for the ECM to effectively manage the transition between different camshaft profiles, such as high-lift and low-lift modes, which directly impacts engine efficiency, power output, and emissions.
OBDII Code P2C08 2021 Chevrolet Silverado - Intake Camshaft Profile Actuator Position Sensor 1 Circuit High Voltage
P2C08 2021 Chevrolet Silverado Code - Intake Camshaft Profile Actuator Position Sensor 1 Circuit High Voltage

Common Causes of P2C08 2021 Chevrolet Silverado

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

Symptoms of P2C08 2021 Chevrolet Silverado

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Rough idling or stalling during low-speed operation
  3. Decreased fuel efficiency and increased emissions
  4. Loss of power during acceleration or poor throttle response
  5. Unusual engine noises, such as knocking or ticking sounds

How to Fix P2C08 2021 Chevrolet Silverado

  1. Perform a thorough visual inspection of the Intake Camshaft Profile Actuator and associated wiring for damage or corrosion.
  2. Test the Intake Camshaft Profile Actuator Position Sensor using a multimeter to check for proper voltage and resistance.
  3. Inspect and repair any damaged wiring or poor electrical connections in the actuator circuit.
  4. If the actuator or sensor is found to be faulty, replace the defective component with a new one.
  5. Clear the diagnostic trouble codes from the ECM and perform a test drive to ensure proper operation and verify that the code does not return.

Cost to Fix P2C08 2021 Chevrolet Silverado

The cost to diagnose and repair the P2C08 code can vary significantly based on the specific issue identified, the make and model of the vehicle, and the labor rates of the shop. Typically, parts such as the Intake Camshaft Profile Actuator or the Position Sensor can range from $100 to $300. Labor costs may range from $80 to $150 per hour, depending on whether you go to a dealership or an independent shop. Overall, you can expect a total repair cost between $200 and $600, including parts and labor, but this may vary based on your location and vehicle specifics.

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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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