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 is having trouble reading the sensor that helps control the turbocharger. It's like when you have a loose wire on a toy, and it doesn't always work right.
The P2566 code indicates an intermittent issue with the turbocharger boost control position sensor circuit. This sensor helps the engine control module (ECM) determine the position of the turbocharger's vanes to regulate boost pressure.
P2566 is triggered when the ECM detects an intermittent signal from the turbocharger boost control position sensor A. This sensor provides feedback on the position of the turbocharger's vanes, which adjust to control the amount of boost pressure. An intermittent circuit can cause erratic turbocharger performance, affecting engine efficiency and power output.
• Check Engine Light is on
• Reduced engine performance
• Erratic turbocharger boost levels
• Faulty turbocharger boost control position sensor
• Wiring issues such as loose connections or damaged wires
• Faulty ECM
Turbocharger: A device that increases an engine's efficiency and power output by forcing extra air into the combustion chamber.
ECM: Engine Control Module, the computer that controls the engine's functions.
• Scan the vehicle for additional codes and freeze frame data
• Inspect the wiring and connectors for damage or loose connections
• Test the turbocharger boost control position sensor for proper operation
• Repair or replace damaged wiring or connectors
• Replace the turbocharger boost control position sensor
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect turbocharger components
• Ensure all electrical connections are secure
• Perform regular vehicle maintenance
Sensor Issue
• Do not ignore the Check Engine Light
• Have the vehicle inspected by a professional
• Avoid heavy acceleration until the issue is resolved
Check with the vehicle manufacturer for warranty coverage on turbocharger components.
This code has been associated with issues in vehicles with turbocharged engines, particularly when sensors or wiring become worn or damaged over time.
Moderate – This issue should be addressed soon to prevent potential engine performance problems.
Driving with a malfunctioning turbocharger can lead to reduced performance and increased emissions. Address the issue promptly to ensure vehicle safety and compliance with emissions standards.
• Engine running
• Turbocharger engaged
The turbocharger boost control position sensor is typically located near the turbocharger, often on or near the intake manifold.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced engine performance and potentially damage the turbocharger over time.
Q: Can I drive my car with a P2566 code?
A: While you can drive with this code, it's not recommended as it can affect engine performance and efficiency. It's best to address the issue promptly.
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.