Brake Pedal Position Sensor Circuit Range/Performance Problem
The brake pedal position sensor is reporting a value that's out of range or inconsistent with expected performance.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The brake pedal position sensor tells the computer how far and fast you push the brake pedal. If it's sending weird signals, the computer thinks there's a problem when you’re braking.
What the computer is actually seeing
The computer expects the brake position sensor to send a voltage between 0.5V (pedal released) and 4.5V (pedal fully depressed). If the signal falls outside this range, the code triggers.
What a healthy reading looks like
0.5V (pedal not pressed) to 4.5V (pedal pressed).
Guided diagnostic — the DiagCoach way
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.
- 11. Inspect the brake pedal position sensor connector and wiring for damage or corrosion. Decision: If damaged, repair/replace the wiring or connector. If good, proceed to step 2.
- 22. Use a multimeter to check the voltage at the brake pedal position sensor. With the pedal released, it should read around 0.5V. Decision: If not, replace the sensor. If it reads 0.5V, proceed to step 3.
- 33. Gradually press the brake pedal and monitor the voltage. It should smoothly range from 0.5V to 4.5V. Decision: If it jumps or is erratic, replace the sensor. If it operates correctly, investigate the brake control module.
Common causes
- Faulty brake pedal position sensor
- Damaged wiring or connectors
- Poor ground connection
- Corrosion in the connector
- Faulty brake control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive the vehicle with this code?
You can drive it, but you may face braking system issues, and it's better to fix it soon.
Will this code come back after clearing it?
If the underlying issue isn’t fixed, yes, the code will likely return.
Why is this code linked to the brake control module?
The brake pedal position sensor directly affects the brake control module's functions, so if it misreads, it can trigger this code.
Working a real vehicle right now?
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