Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part called a turbocharger that helps it go faster. This code means that a sensor in the turbocharger is stuck and not working right, like a toy that gets stuck and won't move.
The P259B code indicates that the turbocharger boost control position sensor 'B' is reporting a signal that is too high, suggesting it may be stuck or malfunctioning.
The turbocharger boost control position sensor 'B' monitors the position of the turbocharger's boost control actuator. If the sensor reports a signal that is higher than expected, the engine control module (ECM) triggers this code, indicating a potential issue with the sensor or actuator.
• Check Engine Light illuminated
• Reduced engine performance
• Poor acceleration
• Faulty turbocharger boost control position sensor
• Wiring issues or poor electrical connections
• Stuck or malfunctioning turbocharger actuator
Turbocharger: A device that increases an engine's efficiency and power output by forcing extra air into the combustion chamber.
Actuator: A component of a machine that is responsible for moving or controlling a mechanism or system.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for the sensor.
• Test the turbocharger actuator for proper movement.
• Replace the turbocharger boost control position sensor.
• Repair or replace damaged wiring or connectors.
• Clean or replace the turbocharger actuator if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance of the turbocharger system
• Routine inspection of electrical connections
• Timely replacement of faulty sensors
Sensor Issue
• Do not ignore the Check Engine Light.
• Have your vehicle inspected by a professional.
• Avoid heavy acceleration until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been reported in turbocharged vehicles, especially those with higher mileage or lack of maintenance.
Moderate – Addressing this issue promptly will prevent further engine performance problems.
Driving with a malfunctioning turbocharger can lead to reduced performance and increased emissions.
• Engine running
• Vehicle at operating temperature
The turbocharger boost control position sensor is typically located near the turbocharger on the engine.
Q: Can I drive my car with a P259B code?
A: It's not recommended to drive for long periods with this code, as it can lead to reduced performance and potential engine damage.
Q: How can I prevent a P259B code?
A: Regular maintenance and inspections of the turbocharger system can help prevent this issue.
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