What it means
The brake pedal position sensor supply circuit is open or has lost electrical continuity. The module may not receive a valid pedal-position signal.
At a glance
- Usually lights the ABS or stability-control warning light
- The engine or gearbox may go into limp mode
How it works
The brake pedal position sensor reports how far the pedal is being pressed so the brake or stability-control module can coordinate related functions. This code sets when the sensor's supply circuit loses continuity, preventing the module from receiving a dependable powered signal.
Common causes
Most likely first.
- Open or damaged supply wiring
- Loose or corroded connector
- Faulty sensor or module
Symptoms
- Brake or stability-control warning light
- Brake-related functions may be limited
How to diagnose it
- Read the brake-module freeze-frame and live data to see whether pedal position is missing or drops out when the fault occurs.
- Inspect the brake pedal position sensor connector for a loose fit, corrosion, pushed-back pins, or damaged locking tabs.
- Follow the sensor supply wire and harness for breaks, chafing, or prior repairs that could interrupt continuity.
- With the wiring diagram, check supply continuity between the module and sensor, and check for unintended opens or shorts.
- If wiring and connections pass, test the sensor supply and module circuit against the manufacturer's specification before replacing either part.
Common fixes
- Reconnect and secure a loose brake pedal position sensor plug.
- Clean or repair corroded connector terminals.
- Repair an open or damaged section of sensor supply wiring.
- Replace a sensor or repair a module only after circuit testing identifies it as faulty.
Can I keep driving?
Because brake or stability functions may be limited, avoid high-speed driving and allow extra stopping distance. If braking feel changes or a brake warning appears, stop safely and arrange inspection before continuing.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.