Brake Pedal Sensor Circuit Performance Problem
The brake pedal sensor is out of range or malfunctioning.
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 sensor tracks how far you press the brake down and sends that info to the computer. If it fails, your brakes might not work properly or might trigger warning lights.
What the computer is actually seeing
The brake pedal position sensor sends a voltage signal based on the brake pedal's position. An expected voltage range is typically between 0.5V (brake not pressed) to 4.5V (fully pressed).
What a healthy reading looks like
Brake pedal sensor should output between 0.5V and 4.5V depending on position. Check for steady state when pedal position is unchanged.
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 and wiring for visible damage or corrosion.
- 22. Check connector integrity; clean and reseat connectors if needed.
- 33. Measure the voltage at the sensor connector with the ignition in the on position: should be 0.5V-4.5V.
- 4 - If voltage is outside this range, replace the sensor.
- 54. If sensor voltage is correct, check the PCM for any stored fault codes that may indicate other issues.
- 65. Ensure that the brake fluid level is adequate and check for leaks in the brake system.
Common causes
- Faulty brake pedal position sensor
- Wiring issues between sensor and PCM
- Poor connector contacts
- Faulty brake switch operation
- Software glitch in the PCM
Typical repair cost
$100-$300
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s best to get it checked soon as brake performance could be affected.
Will this issue come back if I reset the code?
It can, especially if the sensor or wiring isn't fixed.
Why does this code pair with other brake-related codes?
They often share the same circuit or affected components, which can indicate a broader issue.
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