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Engine-Codes – Generic – P2C19

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

Quick Answer

The diagnostic code P2C19 refers to a high voltage condition detected 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 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 Description

The diagnostic code P2C19 refers to a high voltage condition detected in the Exhaust Camshaft Profile Actuator Position Sensor 2 circuit. This sensor is crucial for the operation of the exhaust camshaft profile actuator assembly, which plays a significant role in optimizing engine performance and efficiency. The actuator adjusts the camshaft's profile, allowing for variable valve lift strategies that enhance fuel economy, reduce emissions, and improve overall engine responsiveness under different driving conditions. The sensor employs a Hall-effect element that detects variations in a magnetic field to relay the position of the actuator pins to the Engine Control Module (ECM).
OBDII Code P2C19 - Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage
P2C19 Code - Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage

Common Causes of P2C19

  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 assembly

Symptoms of P2C19

  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 stalling
  5. Unusual engine noises, particularly during acceleration

How to Fix P2C19

  1. Perform a visual inspection of the wiring and connectors associated with the Exhaust Camshaft Profile Actuator for signs of damage or corrosion.
  2. Test the Exhaust Camshaft Profile Actuator Position Sensor using a multimeter to check for proper voltage and resistance readings.
  3. If the sensor is faulty, replace it with a new unit and ensure all connections are secure.
  4. Inspect the actuator assembly for mechanical issues, such as sticking pins or debris, and clean or replace components as necessary.
  5. Clear the fault codes from the ECM and conduct a road test to verify that the issue has been resolved and that the engine operates normally.

Cost to Fix P2C19

The cost to diagnose and repair the P2C19 code typically ranges from $200 to $600, depending on the specific issue and the parts required. Replacing the Exhaust Camshaft Profile Actuator Position Sensor may cost between $100 and $300 for the part alone, with labor costs varying based on the shop's hourly rate, which generally falls between $80 and $150 per hour. Dealerships may charge higher rates, while independent shops might offer more competitive pricing. Always consider that costs can vary significantly based on location, vehicle make and model, and the complexity of the repair.

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Code P2C19 Information for Specific Makes

  • P2C19 Chevrolet — Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage
  • P2C19 GMC — Exhaust Camshaft Profile Actuator Position Sensor 2 Circuit High Voltage
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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