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P30B2 2020 Chevrolet Silverado Code - Intake Camshaft Profile Actuator Position Sensor 4 Circuit Low Voltage

Quick Answer

The P30B2 diagnostic trouble code (DTC) indicates a low voltage condition in the Intake Camshaft Profile Actuator Position Sensor 4 circuit. Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Intake Camshaft Profile Actuator circuit 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
P30B2 2020 Chevrolet Silverado indicates Intake Camshaft Profile Actuator Position Sensor 4 Circuit Low Voltage.
Common causes
Common causes include Faulty Intake Camshaft Profile Actuator, Intake Camshaft Profile Actuator harness is open or shorted, Intake Camshaft Profile Actuator circuit 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 29, 2026
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Code P30B2 2020 Chevrolet Silverado Description

The P30B2 diagnostic trouble code (DTC) indicates a low voltage condition in the Intake Camshaft Profile Actuator Position Sensor 4 circuit. This sensor is an integral part of the intake camshaft profile actuator assembly, which plays a crucial role in managing the engine's variable valve timing (VVT) system. The sensor utilizes Hall-effect technology to monitor the position of the actuator pins that control the camshaft profile sleeve, allowing the Engine Control Module (ECM) to adjust the camshaft's lift and duration based on driving conditions. This adjustment is vital for optimizing engine performance, improving fuel efficiency, and reducing emissions.
OBDII Code P30B2 2020 Chevrolet Silverado - Intake Camshaft Profile Actuator Position Sensor 4 Circuit Low Voltage
P30B2 2020 Chevrolet Silverado Code - Intake Camshaft Profile Actuator Position Sensor 4 Circuit Low Voltage

Common Causes of P30B2 2020 Chevrolet Silverado

  1. Faulty Intake Camshaft Profile Actuator
  2. Intake Camshaft Profile Actuator harness is open or shorted
  3. Intake Camshaft Profile Actuator circuit poor electrical connection
  4. Faulty Engine Control Module (ECM)
  5. Contamination or mechanical wear affecting the actuator pin movement

Symptoms of P30B2 2020 Chevrolet Silverado

  1. Engine Light ON (or Service Engine Soon Warning Light)
  2. Reduced engine performance or power loss
  3. Poor fuel economy or increased fuel consumption
  4. Rough idling or stalling during operation
  5. Engine misfires or hesitation during acceleration

How to Fix P30B2 2020 Chevrolet Silverado

  1. Perform a visual inspection of the wiring and connectors associated with the Intake Camshaft Profile Actuator for damage or corrosion.
  2. Test the Intake Camshaft Profile Actuator Position Sensor for proper voltage and resistance using a multimeter.
  3. If the sensor is faulty, replace the Intake Camshaft Profile Actuator Position Sensor with a new one.
  4. Check the Intake Camshaft Profile Actuator for proper operation and replace it if necessary.
  5. Clear the diagnostic trouble codes and perform a road test to ensure the issue is resolved and the engine operates smoothly.

Cost to Fix P30B2 2020 Chevrolet Silverado

The cost to diagnose and repair a P30B2 code can vary significantly based on the specific issues found and the vehicle model. Typically, parts for the Intake Camshaft Profile Actuator Position Sensor range from $50 to $150, while the actuator itself can cost between $200 and $500. Labor costs generally fall between $80 and $150 per hour, depending on the shop's location and whether it is an independent or dealership service. Overall, you might expect to spend between $150 and $800 to resolve the issue, 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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