Brake Pressure Sensor Range/Performance Problem
This code indicates an issue with the brake pressure sensor reading.
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 is not sending the correct readings to the computer, meaning it thinks there's a problem with brake pressure when there might not be.
What the computer is actually seeing
The brake control module expects a voltage signal between 0.5V to 4.5V from the brake pressure sensor depending on the pressure. Deviations from this range trigger the code.
What a healthy reading looks like
Brake pressure sensor should output 0.5V at 0 psi and increase linearly to 4.5V at around 2000 psi.
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.
- 1Check the brake fluid level in the master cylinder. If low, fill to the recommended level and clear the code. If code returns, proceed to next step.
- 2Inspect the wiring and connector to the brake pressure sensor. Look for frayed wires or corrosion. Repair any issues found before testing the sensor again.
- 3Using a multimeter, measure the voltage output from the brake pressure sensor while applying brake pressure. Ensure it falls within expected values (0.5V to 4.5V). If outside, replace the sensor.
- 4If sensor is within range, test the ABS control module for fault codes. Repair or replace module if necessary.
Common causes
- Faulty brake pressure sensor
- Wiring issue or bad connector
- Brake fluid low or contaminated
- ABS module fault
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's best to fix it soon; while you may be able to drive, it can affect braking performance.
Will this code come back after clearing?
Yes, if the underlying problem isn't fixed, the code will return.
Why does this code pair with other ABS codes?
Multiple ABS codes can appear if there's a systemic issue in the braking system or the module itself.
Working a real vehicle right now?
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