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P2C14 2022 GMC Sierra Code - Exhaust Camshaft Profile Actuator Position Sensor 1 Circuit Low Voltage

Quick Answer

The P2C14 diagnostic trouble code (DTC) indicates a low voltage condition in the Exhaust Camshaft Profile Actuator Position Sensor 1 circuit. Common causes include Faulty Exhaust Camshaft Profile ActuatorExhaust Camshaft Profile Actuator harness is open or shortedExhaust Camshaft Profile Actuator circuit has poor electrical connectionsFaulty Engine Control Module (ECM)Mechanical issues such as sticking actuator pins or debris in the actuator assembly. 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
P2C14 2022 GMC Sierra indicates Exhaust Camshaft Profile Actuator Position Sensor 1 Circuit Low Voltage.
Common causes
Common causes include Faulty Exhaust Camshaft Profile ActuatorExhaust Camshaft Profile Actuator harness is open or shortedExhaust Camshaft Profile Actuator circuit has poor electrical connectionsFaulty Engine Control Module (ECM)Mechanical issues such as sticking actuator pins or debris in the actuator assembly.
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 31, 2026
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Code P2C14 2022 GMC Sierra Description

The P2C14 diagnostic trouble code (DTC) indicates a low voltage condition in the Exhaust Camshaft Profile Actuator Position Sensor 1 circuit. This sensor is a critical component of the exhaust camshaft profile actuator assembly, which plays a vital role in optimizing engine performance. The actuator adjusts the camshaft's profile, allowing for variable valve lift strategies that enhance engine efficiency, improve emissions control, and boost overall power output. By providing real-time feedback to the Engine Control Module (ECM) regarding the position of the actuator pins, the sensor enables the ECM to confirm that the exhaust camshaft has transitioned between its various profiles as intended.
OBDII Code P2C14 2022 GMC Sierra - Exhaust Camshaft Profile Actuator Position Sensor 1 Circuit Low Voltage
P2C14 2022 GMC Sierra Code - Exhaust Camshaft Profile Actuator Position Sensor 1 Circuit Low Voltage

Common Causes of P2C14 2022 GMC Sierra

  1. Faulty Exhaust Camshaft Profile Actuator
  2. Exhaust Camshaft Profile Actuator harness is open or shorted
  3. Exhaust Camshaft Profile Actuator circuit has poor electrical connections
  4. Faulty Engine Control Module (ECM)
  5. Mechanical issues such as sticking actuator pins or debris in the actuator assembly

Symptoms of P2C14 2022 GMC Sierra

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Reduced engine performance or power loss
  3. Increased fuel consumption
  4. Rough idling or engine misfires
  5. Unusual engine noises during operation

How to Fix P2C14 2022 GMC Sierra

  1. Perform a visual inspection of the Exhaust Camshaft Profile Actuator and its wiring for any signs of damage or wear.
  2. Test the Exhaust Camshaft Profile Actuator Position Sensor for proper voltage and signal output using a multimeter.
  3. Check the electrical connections and harness for continuity, ensuring there are no open or shorted circuits.
  4. If the sensor is found to be faulty, replace it with a new one and clear the DTC from the ECM.
  5. After repairs, conduct a road test to ensure the vehicle operates correctly and the check engine light remains off.

Cost to Fix P2C14 2022 GMC Sierra

The cost to diagnose and repair the P2C14 code can vary significantly based on the specific issue and the vehicle make and model. Typically, parts for the Exhaust Camshaft Profile Actuator Position Sensor can range from $50 to $200, while labor costs may range from $80 to $150 per hour, depending on the shop's location and expertise. Overall, the total repair cost can be between $150 and $600, including parts and labor. Dealerships may charge higher rates, while independent shops often offer 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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