Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble understanding the position of the brake pedal because it's getting a confusing message from another part of the car.
The Brake Pedal Position Sensor is not sending a clear signal through the Controller Area Network (CAN) from the Dynamic Stability Control (DSC) module.
The P17FB code indicates that the Brake Pedal Position Sensor is sending an incorrect or faulty signal to the vehicle's CAN bus, which is supposed to be relayed from the Dynamic Stability Control (DSC) system. This can affect the vehicle's braking and stability control systems.
• Warning lights on the dashboard
• Unresponsive or erratic braking
• Stability control system malfunction
• Faulty Brake Pedal Position Sensor
• Wiring issues or poor connections
• Faulty DSC module
CAN: Controller Area Network, a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
DSC: Dynamic Stability Control, a system that helps maintain vehicle stability.
• Check for any other related error codes.
• Inspect the Brake Pedal Position Sensor for damage.
• Test the wiring and connections between the sensor and DSC module.
• Replace the Brake Pedal Position Sensor.
• Repair or replace damaged wiring or connectors.
• Replace the DSC module if faulty.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• BMW 3 Series
• BMW 5 Series
• BMW X5
• Regular maintenance checks of the braking system.
• Ensure all electrical connections are secure.
• Use OEM parts for replacements.
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid driving at high speeds until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on electronic components.
This code has been reported in vehicles with electronic stability control systems, particularly in models with advanced braking systems.
High – This issue can affect the vehicle's braking and stability, which are critical for safe driving.
Driving with a faulty brake system can be dangerous and may violate traffic safety laws.
• Vehicle stationary
• Engine running
The Brake Pedal Position Sensor is typically located near the brake pedal assembly, inside the driver's footwell.
Q: Can I drive with a P17FB code?
A: It's not recommended to drive with this code, as it can affect braking and stability.
Q: How can I reset the P17FB code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
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.
View on Amazon
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.
View on Amazon
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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.