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Engine-Codes – GMC – P2C19 GMC

P2C19 GMC Code - Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage

Quick Answer

The P2C19 code indicates a high voltage condition in the Exhaust Camshaft Profile Actuator Position Sensor 2 circuit. Common causes include Faulty Exhaust Camshaft Profile Actuator, Exhaust Camshaft Profile Actuator harness is open or shorted, Poor electrical connection in the Exhaust 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
P2C19 GMC indicates Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty Exhaust Camshaft Profile Actuator, Exhaust Camshaft Profile Actuator harness is open or shorted, Poor electrical connection in the Exhaust 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 31, 2026
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Code P2C19 GMC Description

The P2C19 code indicates a high voltage condition in the Exhaust Camshaft Profile Actuator Position Sensor 2 circuit. This sensor is integral to the exhaust camshaft profile actuator assembly, which plays a crucial role in managing the engine's variable valve timing (VVT) system. The actuator adjusts the position of the exhaust camshaft profile sleeve, allowing for different valve lift strategies based on engine load and speed. This capability enhances engine performance, fuel efficiency, and emissions control by optimizing the timing and lift of the exhaust valves.
OBDII Code P2C19 GMC - Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage
P2C19 GMC Code - Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage

Common Causes of P2C19 GMC

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

Symptoms of P2C19 GMC

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Decreased engine performance or power loss
  3. Poor fuel economy and increased emissions
  4. Rough idling or engine misfires
  5. Unusual engine noises, such as knocking or ticking

How to Fix P2C19 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 for proper voltage and resistance using a multimeter.
  3. Check for any open or short circuits in the wiring harness and repair as necessary.
  4. Replace the Exhaust Camshaft Profile Actuator if it is found to be faulty.
  5. Clear the fault codes and perform a test drive to ensure the issue has been resolved and the engine operates normally.

Cost to Fix P2C19 GMC

The cost to diagnose and repair a P2C19 code typically ranges from $200 to $600, depending on the specific repairs needed. This includes parts and labor, with parts such as the exhaust camshaft profile actuator costing between $100 and $300. Labor costs can vary significantly based on location and shop type, with most shops charging between $80 and $150 per hour. Dealerships may charge higher rates, while independent shops often offer more competitive pricing.

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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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