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Engine-Codes – Generic – P2C17

P2C17 Code - Exhaust Camshaft Profile Actuator Position Sensor 2 Performance

Quick Answer

The P2C17 code indicates a performance issue with the Exhaust Camshaft Profile Actuator Position Sensor 2, which is integral to the exhaust camshaft profile actuator assembly. 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
P2C17 indicates Exhaust Camshaft Profile Actuator Position Sensor 2 Performance.
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 P2C17 Description

The P2C17 code indicates a performance issue with the Exhaust Camshaft Profile Actuator Position Sensor 2, which is integral to the exhaust camshaft profile actuator assembly. This sensor plays a crucial role in providing real-time feedback to the Engine Control Module (ECM) regarding the position of the actuator pins that adjust the exhaust camshaft profile sleeve. Utilizing a Hall-effect element, the sensor detects changes in a magnetic field to accurately determine the position of the actuator pins. This information allows the ECM to ensure that the exhaust camshaft has effectively transitioned between its various cam profiles, optimizing engine performance, fuel efficiency, and emissions control.
OBDII Code P2C17 - Exhaust Camshaft Profile Actuator Position Sensor 2 Performance
P2C17 Code - Exhaust Camshaft Profile Actuator Position Sensor 2 Performance

Common Causes of P2C17

  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 P2C17

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Decreased engine performance or power loss
  3. Rough idling or stalling
  4. Increased fuel consumption
  5. Unusual engine noises, particularly during acceleration

How to Fix P2C17

  1. Perform a visual inspection of the Exhaust Camshaft Profile Actuator and its wiring harness for damage or corrosion.
  2. Test the Exhaust Camshaft Profile Actuator Position Sensor using a multimeter to check for proper voltage and resistance.
  3. Inspect and clean the electrical connectors to ensure good contact and eliminate any corrosion.
  4. If the sensor is faulty, replace it with a new one and clear the fault code from the ECM.
  5. Test drive the vehicle to ensure that the issue is resolved and that the engine operates smoothly without triggering the code again.

Cost to Fix P2C17

The cost to diagnose and repair the P2C17 code typically ranges from $200 to $600, depending on the specific issue identified. This estimate includes parts and labor, with parts like 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 tend to be on the higher end of the scale, while independent shops may offer more competitive rates.

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Code P2C17 Information for Specific Makes

  • P2C17 Chevrolet — Exhaust Camshaft Profile Actuator Position Sensor 2 Performance
  • P2C17 GMC — Exhaust Camshaft Profile Actuator Position Sensor 2 Performance
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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