Brake Pressure Sensor Circuit Range/Performance Problem
This code indicates a problem 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're pressing the brake pedal. If its signal is too high or too low, the computer thinks there's a problem and triggers this code.
What the computer is actually seeing
The brake pressure sensor sends a voltage signal to the computer. The expected range is typically around 0.5 to 4.5 volts, where 0.5 volts indicates no pressure and 4.5 volts indicates full pressure.
What a healthy reading looks like
0.5V - 4.5V for brake pressure; approximately 0 PSI - 1500 PSI pressure during testing.
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 brake fluid level; top off if low. Decision: If low, fill and retest. If okay, proceed.
- 2Inspect brake pressure sensor connector and wiring for damage. Decision: If damaged, repair/replace and retest. If good, continue.
- 3Using a multimeter, measure the voltage at the brake pressure sensor while someone presses the brake pedal. Expect 0.5V to 4.5V. Decision: If out of range, replace the sensor. If within range, further investigation is needed.
Common causes
- Faulty brake pressure sensor
- Wiring issues or damaged connector
- Low brake fluid level or air in the system
- Faulty hydraulic brake system component
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; fix soon, but you can drive it if brakes feel normal.
Will this code come back after clearing it?
If the underlying problem isn't fixed, yes, it will return.
Why does this code show up with ABS issues?
The brake pressure sensor is critical for ABS operation, and faults can trigger multiple codes.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →