Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with a part that helps control the engine's camshaft, which is a part that helps the engine run smoothly. It's like if a toy's moving part isn't working right, so the toy doesn't work as it should.
The P2B37 code indicates that the control circuit for the camshaft profile actuator 'B' on bank 2 is experiencing low voltage or resistance issues.
The camshaft profile actuator is responsible for adjusting the camshaft's position to optimize engine performance and efficiency. Bank 2 refers to the side of the engine opposite to cylinder 1. A low control circuit signal suggests an electrical issue, such as poor connectivity or a failing actuator.
• Check Engine Light illuminated
• Rough engine idle
• Decreased engine performance
• Increased fuel consumption
• Faulty camshaft profile actuator
• Wiring issues in the control circuit
• Poor electrical connections
• Faulty Engine Control Module (ECM)
Camshaft: A shaft in the engine that controls the opening and closing of the engine's valves.
Actuator: A device that causes a machine or other device to operate.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the camshaft profile actuator for proper operation.
• Check the ECM for any faults.
• Repair or replace damaged wiring or connectors.
• Replace the faulty camshaft profile actuator.
• Update or reprogram the ECM if necessary.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Socket set
• Wiring repair tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance checks
• Ensure proper electrical connections
• Use high-quality engine oil
Sensor Issue
• Do not ignore the Check Engine Light.
• Get the vehicle diagnosed by a professional if unsure.
• Regularly check for any unusual engine noises.
Check with the manufacturer for warranty coverage on the camshaft actuator and related components.
This code has been more common in vehicles with higher mileage and those that have not had regular maintenance.
Moderate – While the vehicle may still operate, ignoring the issue could lead to more significant engine problems.
Driving with a Check Engine Light on can lead to increased emissions and may not comply with local emissions regulations.
• Engine at operating temperature
• Vehicle in park or neutral
The camshaft profile actuator is typically located near the top of the engine, on the side corresponding to bank 2.
Q: Can I drive with a P2B37 code?
A: It's possible to drive, but it's not recommended as it can lead to further engine damage.
Q: How can I prevent a P2B37 code?
A: Regular maintenance and ensuring all electrical connections are secure can help prevent this code.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.