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P2C09 2023 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 2 Circuit

Quick Answer

The P2C09 code indicates a problem with the Intake Camshaft Profile Actuator Position Sensor 2 circuit in GMC vehicles. Common causes include Faulty Intake Camshaft Profile ActuatorIntake Camshaft Profile Actuator harness is open or shortedPoor electrical connection in the Intake Camshaft Profile Actuator circuitFaulty Engine Control Module (ECM)Contaminated or damaged actuator pin mechanism. 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
P2C09 2023 GMC Sierra indicates Intake Camshaft Profile Actuator Position Sensor 2 Circuit.
Common causes
Common causes include Faulty Intake Camshaft Profile ActuatorIntake Camshaft Profile Actuator harness is open or shortedPoor electrical connection in the Intake Camshaft Profile Actuator circuitFaulty Engine Control Module (ECM)Contaminated or damaged actuator pin mechanism.
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 P2C09 2023 GMC Sierra Description

The P2C09 code indicates a problem with the Intake Camshaft Profile Actuator Position Sensor 2 circuit in GMC vehicles. This sensor is a critical component of the variable valve timing (VVT) system, which plays a vital role in optimizing engine performance, enhancing fuel efficiency, and reducing emissions. The sensor is integrated into the intake camshaft profile actuator assembly and utilizes Hall-effect technology to monitor the position of the actuator pins that control the camshaft profile sleeve. By providing real-time feedback to the Engine Control Module (ECM), the sensor enables the engine to switch between different camshaft profiles, such as high-lift for performance and low-lift for fuel economy.
OBDII Code P2C09 2023 GMC Sierra - Intake Camshaft Profile Actuator Position Sensor 2 Circuit
P2C09 2023 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 2 Circuit

Common Causes of P2C09 2023 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 damaged actuator pin mechanism

Symptoms of P2C09 2023 GMC Sierra

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Reduced engine power and acceleration
  3. Rough idling or stalling
  4. Increased fuel consumption
  5. Unusual engine noises, such as ticking or knocking

How to Fix P2C09 2023 GMC Sierra

  1. Perform a thorough diagnostic check to confirm the P2C09 code and identify any related codes.
  2. Inspect the Intake Camshaft Profile Actuator and its wiring harness for any visible damage, corrosion, or loose connections.
  3. Test the Intake Camshaft Profile Actuator Position Sensor for proper operation and replace it if faulty.
  4. Check the ECM for any software updates or faults that may need addressing.
  5. Clear the diagnostic codes and conduct a road test to ensure the issue has been resolved and the engine operates smoothly.

Cost to Fix P2C09 2023 GMC Sierra

The cost to diagnose and repair issues related to the P2C09 code typically ranges from $200 to $800, depending on the specific repairs needed. This estimate includes parts such as the Intake Camshaft Profile Actuator or sensor, which can cost between $100 and $400, along with labor charges that vary by location and shop type. Most shops charge between $80 and $150 per hour, with dealerships generally on the higher end of the scale and independent shops offering more competitive rates.

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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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