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Engine Fault Code P2586

Turbocharger Boost Control Position Sensor B Circuit

Care Engine Code Reader
The Engine Fault Code P2586 refers to an issue with the Turbocharger Boost Control Position Sensor B Circuit. This code indicates that the engine control module (ECM) has detected a problem with the circuit that controls the boost pressure of the turbocharger.

What It Means:
1. Turbocharger Boost Control Position Sensor: This sensor monitors the position of the turbocharger`s wastegate or actuator, which controls the boost pressure.
2. B Circuit: The `B` in the code typically refers to a specific circuit related to the sensor. It may indicate a second sensor or an alternative circuit in some vehicles.

Possible Causes:
– Faulty Turbocharger Boost Control Position Sensor
– Wiring issues, such as shorts or open circuits
– Poor connections or corroded terminals
– Issues with the turbocharger itself
– Problems with the ECM

Alternative Meanings by Manufacturer:
While the core meaning of P2586 remains similar across manufacturers, the interpretation and specific components involved can vary. Here are some examples:

Porsche: May indicate a specific sensor issue related to the turbo on models like the 911 Turbo or Macan.
Mini: Could relate to the turbo systems found in the Mini Cooper S or John Cooper Works models.
Mercedes: Might refer to turbocharged models like the C-Class or E-Class with specific turbo control systems.
Audi: Often associated with models like the A4 or Q5, where turbocharging is common.
Jaguar: May relate to models like the F-PACE or XE that utilize turbocharged engines.
Land Rover: Could be linked to models like the Range Rover or Discovery that have turbocharged engines.

Next Steps:
If you encounter this code, its best to:
1. Inspect the wiring and connectors for damage.
2. Check the turbocharger boost control position sensor.
3. Use a diagnostic scanner to clear the code and see if it returns.
4. Consult a professional mechanic if youre unsure or if the problem persists.

Always refer to the vehicle`s service manual for specific troubleshooting steps related to your make and model.
The Engine Fault Code P2586 relates to the Turbocharger Boost Control Position Sensor B Circuit. This code indicates that there`s an issue with the sensor that monitors the position of the turbocharger`s wastegate. Here are some common causes for this code, along with manufacturer-specific differences:

Common Causes:
1. Faulty Turbocharger Boost Control Position Sensor: The sensor itself may be malfunctioning or damaged.

2. Wiring Issues: Damaged, frayed, or corroded wires in the sensor circuit can lead to poor signal transmission.

3. Connector Problems: Loose or corroded connectors can disrupt the electrical connection to the sensor.

4. Turbocharger Wastegate Issues: If the wastegate is stuck or not functioning correctly, it can affect boost control.

5. Vacuum Leaks: Leaks in the vacuum system can cause incorrect readings from the sensor.

6. ECU Issues: The Engine Control Unit (ECU) may have a software glitch or internal fault.

Manufacturer-Specific Considerations:
Porsche: Look for issues with the variable geometry turbocharger. The design can be more complex, and the sensor calibration may differ from other brands.

Mini: Mini models often have turbocharged engines with integrated boost control systems. Pay attention to the actuator`s condition and the vacuum lines.

Mercedes: In some Mercedes models, the turbocharger control may be linked to additional systems (like the MAF sensor), which could also trigger this code if they malfunction.

Audi: Audi vehicles might have more sophisticated turbo management systems. Check for software updates or recalls that might address known issues.

Jaguar: Some Jaguar models use unique turbo setups, and the P2586 code might be linked to specific engine configurations or even the supercharger in some cases.

Land Rover: For Land Rover, the turbo system can be affected by terrain-related conditions, so ensure that the vehicle`s off-road settings or features are functioning correctly.


If you encounter the P2586 code, it`s essential to perform a thorough inspection of the turbocharger system, including the sensor, wiring, and connections. Depending on the manufacturer, the specifics may vary, so always refer to the vehicle`s service manual for detailed troubleshooting steps.
The P2586 code indicates a problem with the Turbocharger Boost Control Position Sensor B Circuit. This can affect vehicles like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover. Heres how to address this issue:

General Steps to Fix P2586:

1. Check for Other Codes: Use an OBD-II scanner to see if there are any additional trouble codes. This can help in diagnosing the problem.

2. Inspect Wiring and Connectors:
– Look for any damaged, frayed, or corroded wires connected to the turbocharger boost control sensor.
– Ensure that all connectors are secure and free from dirt or corrosion.

3. Test the Sensor:
– Disconnect the sensor and use a multimeter to test its resistance. Compare the readings to the manufacturers specifications.
– If the sensor is out of spec, it may need to be replaced.

4. Check the Turbocharger:
– Make sure the turbocharger itself is functioning properly. Issues with the turbo can sometimes trigger this code.

5. Inspect the Vacuum Lines:
– If your vehicle uses vacuum lines for the turbo control, check for leaks or blockages.

6. Clear the Codes: After repairs, clear the codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.

Manufacturer-Specific Considerations:

Porsche: Check for software updates or recalls related to the turbo system. Some models may have specific issues documented.

Mini: Look for issues in the wastegate actuator, as it can affect boost control.

Mercedes: Ensure that the Electronic Control Unit (ECU) is functioning correctly. Sometimes, reprogramming the ECU can resolve the issue.

Audi: Audi vehicles often have complex turbo systems. Check for any TSBs (Technical Service Bulletins) related to boost control.

Jaguar: For Jaguar models, pay attention to the turbochargers variable geometry and ensure its operating smoothly.

Land Rover: Land Rover vehicles may have additional sensors in the turbo system. Make sure to inspect all relevant components.


Fixing the P2586 code involves checking the sensor, wiring, and turbocharger itself. Each manufacturer may have unique considerations, so its important to refer to the specific service manual for your vehicle. If you`re not comfortable with these steps, consider consulting a professional mechanic.
Driving with a P2586 code, which indicates an issue with the Turbocharger Boost Control Position Sensor B Circuit, is generally not recommended. This code means that the engine control module (ECM) has detected a problem with the turbocharger`s boost control system. Heres a breakdown of what you should consider:

General Considerations:
1. Performance Issues: You may notice a decrease in engine performance, such as reduced power or acceleration. This can affect your driving experience and safety.
2. Fuel Efficiency: The vehicle may consume more fuel than usual, leading to higher costs.
3. Potential Damage: Ignoring this code could lead to further damage to the turbocharger or other engine components, which can be costly to repair.

Manufacturer-Specific Considerations:
Porsche: If youre driving a Porsche, the turbo system is crucial for performance. Ignoring the code can lead to serious issues, especially in models like the 911 Turbo.

Mini: Mini vehicles often have smaller engines that rely heavily on turbocharging. A malfunction can significantly impact drivability.

Mercedes: In Mercedes vehicles, the turbo system is complex. Driving with this code may trigger limp mode, where the car limits its power to prevent damage.

Audi: Audi models with turbo engines may experience noticeable performance drops. It`s best to address the issue promptly.

Jaguar: For Jaguar vehicles, especially those with turbocharged engines, ignoring this code can lead to more extensive engine issues.

Land Rover: In Land Rover models, the turbo system is essential for off-road and towing capabilities. A malfunction could hinder performance in challenging conditions.


While it might be technically possible to drive with this code for a short distance, it is not advisable. Its best to have the vehicle checked by a professional mechanic to diagnose and fix the issue. This will help ensure your car runs smoothly and safely.

OBD Codes Explained

Engine Codes

P is for PowerTrain - Engine and Transmission.

P0 Indicates Generic Powertrain Codes

P0 Codes indicate problems with the powertrain and are common for all vehicles using the OBD-II Standard.

P1 Enhanced Manufacturer Specific Codes

P1 Codes are specific to manufacturers.

Sub-System

The 3rd Digit indicates the Sub-System

1 – Emission Management

2 – Injector Circuit

3 – Ignition

4 – Emission Control

5 – Vehicle Speed and Idle

6 – Computer and Output

7 – Transmission

8 – Transmission

9 – Reserved

0 – Reserved

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