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Engine-Codes – GMC – P2C0B 2019 GMC Sierra

P2C0B 2019 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 2 Circuit Low Voltage

Quick Answer

The P2C0B code indicates a problem with the Intake Camshaft Profile Actuator Position Sensor 2 circuit, specifically relating to low voltage conditions. Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Poor electrical connection in the Intake 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
P2C0B 2019 GMC Sierra indicates Intake Camshaft Profile Actuator Position Sensor 2 Circuit Low Voltage.
Common causes
Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Poor electrical connection in the Intake 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 29, 2026
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Code P2C0B 2019 GMC Sierra Description

The P2C0B code indicates a problem with the Intake Camshaft Profile Actuator Position Sensor 2 circuit, specifically relating to low voltage conditions. This sensor is a critical component of the variable valve timing (VVT) system, which optimizes engine performance by adjusting the timing of the intake valves based on engine speed and load. The sensor is integrated into the intake camshaft profile actuator assembly and utilizes Hall-effect technology to monitor the position of the actuator pins. These pins control the camshaft profile sleeve, allowing the engine control module (ECM) to switch between different camshaft profiles, such as high-lift and low-lift modes, which are essential for maximizing power output, improving fuel efficiency, and reducing emissions.
OBDII Code P2C0B 2019 GMC Sierra - Intake Camshaft Profile Actuator Position Sensor 2 Circuit Low Voltage
P2C0B 2019 GMC Sierra Code - Intake Camshaft Profile Actuator Position Sensor 2 Circuit Low Voltage

Common Causes of P2C0B 2019 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. Contamination or mechanical wear affecting the actuator pin

Symptoms of P2C0B 2019 GMC Sierra

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Reduced engine power and acceleration
  3. Poor fuel economy and increased emissions
  4. Rough idling or stalling during operation
  5. Difficulty starting the engine

How to Fix P2C0B 2019 GMC Sierra

  1. Perform a thorough visual inspection of the wiring and connectors associated with the Intake Camshaft Profile Actuator for signs of damage or corrosion.
  2. Test the voltage and ground circuits to the Intake Camshaft Profile Actuator Position Sensor to ensure proper operation.
  3. If the sensor is found to be faulty, replace the Intake Camshaft Profile Actuator assembly.
  4. Clear the diagnostic trouble codes from the ECM and perform a road test to verify that the issue has been resolved.
  5. If the problem persists, further diagnose the ECM and related components to identify any underlying issues.

Cost to Fix P2C0B 2019 GMC Sierra

The cost to repair the P2C0B code can vary significantly based on the specific issue and the make and model of the vehicle. Typical parts for the Intake Camshaft Profile Actuator can range from $100 to $400, while labor costs may add an additional $80 to $150 per hour, depending on the shop's location and reputation. Dealerships often charge higher rates, while independent shops may offer more competitive pricing. Overall, total repair costs can range from $200 to $1,000 or more, depending on the extent of the repairs needed.

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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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