Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the car's computer that helps control the brakes. It's like a part of the brain for the car's safety system isn't working right.
The code indicates a malfunction within the Dynamic Stability Control (DSC) module's Power Control Unit (PCU).
The C1086 code is triggered when the DSC module detects an internal error within the Power Control Unit. This unit is responsible for managing power distribution to various components of the DSC system, which helps maintain vehicle stability by controlling braking and engine power.
• Warning light on the dashboard
• Loss of traction control
• Unresponsive or erratic braking behavior
• Faulty DSC control module
• Electrical issues such as a blown fuse or poor wiring connections
• Software malfunction within the DSC module
DSC: Dynamic Stability Control
PCU: Power Control Unit
• Check for any other related trouble codes using an OBD-II scanner.
• Inspect the wiring and connectors to the DSC module for damage or corrosion.
• Test the DSC module's power and ground connections.
• Repair or replace damaged wiring or connectors.
• Reprogram or update the DSC control module software.
• Replace the DSC control module if faulty.
• OBD-II scanner
• Multimeter
• Diagnostic software tool
$300 - $1,200
Moderate
• BMW 3 Series
• Mazda CX-5
• Ford Focus
• Regularly inspect and maintain vehicle electrical systems.
• Keep software up to date.
• Avoid harsh driving conditions that may stress the DSC system.
Control Module Issue
• Have the vehicle inspected by a professional if the warning light appears.
• Avoid driving in conditions that require traction control until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on the DSC module.
This code has been more frequently reported in vehicles with high mileage or those that have experienced electrical issues.
Moderate – It is important to address this issue to ensure vehicle stability and safety.
Driving with a malfunctioning DSC system can compromise vehicle safety, especially in adverse conditions.
• Vehicle ignition in the ON position
• DSC system self-test during vehicle start-up
The DSC control module is typically located under the hood or in the passenger compartment, near the vehicle's firewall.
Q: Can I drive my car with the C1086 code?
A: It's not recommended as the vehicle's stability control system may not function properly, which can be dangerous.
Q: How do I reset the DSC system?
A: Resetting the system often requires a diagnostic tool or professional service to clear the error code and ensure the issue is resolved.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
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Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
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