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Engine-Codes – GMC – P2C13 GMC

P2C13 GMC Code - Exhaust Camshaft Profile Actuator Position Sensor 1 Performance

Quick Answer

The P2C13 code indicates a performance issue with the Exhaust Camshaft Profile Actuator Position Sensor 1 in GMC vehicles. Common causes include Faulty Exhaust Camshaft Profile Actuator, Exhaust Camshaft Profile Actuator harness is open or shorted, Exhaust Camshaft Profile Actuator circuit has 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
P2C13 GMC indicates Exhaust Camshaft Profile Actuator Position Sensor 1 Performance.
Common causes
Common causes include Faulty Exhaust Camshaft Profile Actuator, Exhaust Camshaft Profile Actuator harness is open or shorted, Exhaust Camshaft Profile Actuator circuit has 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 31, 2026
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Code P2C13 GMC Description

The P2C13 code indicates a performance issue with the Exhaust Camshaft Profile Actuator Position Sensor 1 in GMC vehicles. This sensor is integral to the exhaust camshaft profile actuator assembly, which plays a crucial role in optimizing engine performance by adjusting the camshaft profile based on various driving conditions. The sensor employs a Hall-effect mechanism to detect the position of actuator pins that control the movement of the exhaust camshaft profile sleeve. By relaying this positional feedback to the Engine Control Module (ECM), the system can effectively manage valve lift strategies, enhancing engine efficiency, reducing emissions, and improving overall performance.
OBDII Code P2C13 GMC - Exhaust Camshaft Profile Actuator Position Sensor 1 Performance
P2C13 GMC Code - Exhaust Camshaft Profile Actuator Position Sensor 1 Performance

Common Causes of P2C13 GMC

  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 connection
  4. Faulty Engine Control Module (ECM)
  5. Mechanical issues such as sticking actuator pins or debris in the actuator

Symptoms of P2C13 GMC

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

How to Fix P2C13 GMC

  1. Perform a visual inspection of the exhaust camshaft profile actuator and associated wiring for damage or corrosion.
  2. Test the Exhaust Camshaft Profile Actuator Position Sensor using a multimeter to check for proper voltage and resistance readings.
  3. Inspect and clean the actuator assembly to remove any debris or obstructions that may affect its operation.
  4. Replace the Exhaust Camshaft Profile Actuator or the Position Sensor if they are found to be faulty.
  5. Clear the fault code and conduct a road test to ensure the issue has been resolved and the engine operates normally.

Cost to Fix P2C13 GMC

The cost to diagnose and repair the P2C13 code can vary widely depending on the specific issue and the vehicle model. Typical parts, such as the Exhaust Camshaft Profile Actuator or Position Sensor, can range from $100 to $300. Labor costs generally fall between $80 and $150 per hour, with most repairs taking 1 to 3 hours. Dealerships may charge higher rates, while independent shops may offer more competitive pricing. Overall, total repair costs can range from $200 to $800, depending on the extent of the repairs needed and local labor rates.

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Information for Specific GMC Models

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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