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Engine-Codes – GMC – P2C06 2020 GMC Sierra

P2C06 2020 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 1 Performance

Quick Answer

The P2C06 code indicates a performance issue with the Intake Camshaft Profile Actuator Position Sensor 1, which plays a critical role in the engine's variable valve timing (VVT) system. Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Poor electrical connection in the Intake Camshaft Profile Actuator circuit. 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
P2C06 2020 GMC Sierra indicates Intake Camshaft Profile Actuator Position Sensor 1 Performance.
Common causes
Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Poor electrical connection in the Intake Camshaft Profile Actuator circuit.
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 P2C06 2020 GMC Sierra Description

The P2C06 code indicates a performance issue with the Intake Camshaft Profile Actuator Position Sensor 1, which plays a critical role in the engine's variable valve timing (VVT) system. This sensor is integrated into the intake camshaft profile actuator assembly and is responsible for monitoring the position of the actuator pins that control the camshaft profile sleeve. By utilizing Hall-effect technology, the sensor detects whether the actuator pin is in a retracted, extending, or fully extended position. This information is relayed to the Engine Control Module (ECM), which adjusts the camshaft profile to optimize engine performance, fuel efficiency, and emissions based on driving conditions.
OBDII Code P2C06 2020 GMC Sierra - Intake Camshaft Profile Actuator Position Sensor 1 Performance
P2C06 2020 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 1 Performance

Common Causes of P2C06 2020 GMC Sierra

  1. Faulty Intake Camshaft Profile Actuator
  2. Intake Camshaft Profile Actuator harness is open or shorted
  3. Poor electrical connection in the Intake Camshaft Profile Actuator circuit
  4. Faulty Engine Control Module (ECM)
  5. Contaminated or mechanically worn actuator pin

Symptoms of P2C06 2020 GMC Sierra

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Reduced engine power or acceleration
  3. Poor fuel economy
  4. Rough idling or engine misfires
  5. Increased emissions during vehicle inspection

How to Fix P2C06 2020 GMC Sierra

  1. Perform a visual inspection of the Intake Camshaft Profile Actuator and its wiring for damage or corrosion.
  2. Test the Intake Camshaft Profile Actuator Position Sensor for proper voltage and signal output using a multimeter.
  3. Check for any fault codes stored in the ECM and clear them after repairs are made.
  4. Replace the Intake Camshaft Profile Actuator if it is found to be faulty or malfunctioning.
  5. Repair or replace any damaged wiring or poor electrical connections in the actuator circuit.

Cost to Fix P2C06 2020 GMC Sierra

The cost to diagnose and repair the P2C06 code can vary significantly based on the specific issue identified. Typical parts, such as the Intake Camshaft Profile Actuator, may range from $150 to $400, while labor costs can range from $80 to $150 per hour, depending on the shop's location and expertise. Overall, you might expect to spend anywhere from $200 to $800 for a complete diagnosis and repair, with dealership rates generally being higher than those of independent shops.

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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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