Vehicle Brake System Pressure - High
Indicates high brake system pressure detected in the vehicle.
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What it means (plain English)
The system is monitoring how much pressure is in the brake lines. If the pressure goes too high, it can cause issues in braking performance.
What the computer is actually seeing
The brake system pressure sensor measures the hydraulic pressure in the brake system and sends that data to the ECU. If the pressure exceeds the expected limit (often above 1500 psi), a fault is logged.
What a healthy reading looks like
Normal brake pressure is typically between 800-1200 psi depending on the vehicle and system, but it can vary. Anything over 1500 psi can trigger this fault code.
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 in the reservoir; should be within the recommended range. If low, top off and recheck codes.
- 22. Inspect the brake lines and connections for leaks or damage. Repair as needed before further testing.
- 33. Using a scan tool, monitor the brake system pressure value while applying brakes. It should not exceed 1500 psi under normal conditions.
- 44. If the pressure sensor reads high even when not applied, check and possibly replace the brake pressure sensor. Verify calibration after replacement.
- 55. If issues persist, inspect brake calipers and associated hardware for sticking issues.
Common causes
- Faulty pressure sensor
- Damaged brake lines or fittings
- Stuck brake components causing high pressure
- Hydraulic fluid contamination
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive my vehicle with this code active?
No, it's recommended not to drive the vehicle if this fault is active due to potential brake failure.
Will this code return after clearing?
Yes, if the underlying issue isn't fixed, the code will return after clearing.
Why does this code trigger alongside other fault codes?
This code can occur with others if there are common faults in the brake system or sensor failures.
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