Brake Pressure Sensor Input Signal Out of Range
This code indicates an issue with the brake pressure sensor's signal.
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 pressure sensor measures how hard you push the brake pedal. If the signal it sends to the computer is too high or too low, the computer triggers this code to warn you.
What the computer is actually seeing
The brake pressure sensor should output a voltage between 0.5V (minimum brake pressure) and 4.5V (maximum brake pressure). Anything outside this range is flagged as an error.
What a healthy reading looks like
Normal voltage range from the brake pressure sensor is 0.5V to 4.5V depending on the brake pressure applied.
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. Check the brake fluid level. Ensure it's above the minimum mark. If low, top up and recheck the code. Decision: If still present, continue to next step.
- 22. Inspect wiring and connectors related to the brake pressure sensor for damage or corrosion. Repair as necessary. Decision: If repaired or replaced, clear the code and test drive. If the code returns, proceed to next step.
- 33. Test the brake pressure sensor output using a multimeter. It should vary from 0.5V to 4.5V as brakes are applied. Decision: If out of range, replace the sensor; if within range, check the vehicle's computer for damage.
Common causes
- Faulty brake pressure sensor
- Wiring issues or damaged connectors
- Brake fluid level low
- Air in the brake lines
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity, so drivability may be affected. You should repair it soon.
Will this code come back after clear?
Yes, especially if the underlying issue isn't fixed.
Why does this code pair with others?
They may share a common issue, like faulty wiring or a bad sensor.
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