Brake Pedal Position Sensor Circuit Range/Performance Problem

The brake pedal position sensor tells the computer how far down the pedal is pressed. If it reads too high or too low, or isn't sending a signal, you'll get this code.

The brake pedal position sensor should provide a voltage signal between 0.5V (pedal up) and 4.5V (pedal down). If the signal is outside this range during operation, it triggers this code.

Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.

1. 11. Inspect wiring and connectors at the brake pedal position sensor for any signs of damage or corrosion. Fix any issues found.
2. 22. Use a multimeter to check the voltage output from the brake pedal position sensor while pressing the pedal. Confirm it ranges from 0.5V to 4.5V. If outside this range, proceed to next step.
3. 33. Check if the brake pedal is physically obstructed. Ensure it moves freely and isn't stuck. If it’s obstructed, fix the mechanical issue and retest.
4. 44. If wiring and mechanical checks are fine but the sensor output is still out of range, consider replacing the brake pedal position sensor.

• Faulty brake pedal position sensor
• Wiring issues (frayed or shorted wires)
• Poor connections at the sensor or the ECU
• Mechanical obstruction at the brake pedal
• Faulty brake switch assembly

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