Brake Pressure Sensor 2
This code indicates an issue with Brake Pressure Sensor 2.
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 computer is monitoring the brake pressure from Sensor 2, which measures how hard the brake pedal is pressed. If the pressure readings from this sensor are out of the normal range, the code triggers.
What the computer is actually seeing
The ECM expects a voltage range of 0.5-4.5 volts from the brake pressure sensor under normal conditions. If the voltage falls below 0.5V or above 4.5V, this code is set.
What a healthy reading looks like
Brake pressure sensor should provide a voltage output that correlates with brake pressure, typically between 0.5V (0 psi) to 4.5V (about 2000 psi) in most systems.
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 brake fluid level. If low, top it up and recheck codes. Decision: if code remains, proceed to next step; if code clears, monitor for reoccurrence.
- 22. Inspect wiring and connectors to Brake Pressure Sensor 2 for damage or corrosion. Decision: repair any found issues and check codes again; if code returns, continue.
- 33. Measure voltage at the sensor while applying brake pressure. You should see a voltage between 0.5V and 4.5V. If out of range, the sensor may be faulty. Decision: replace the sensor if voltage is bad; if voltage is good, troubleshoot further for ECM issues.
Common causes
- Faulty brake pressure sensor
- Wiring issues or loose connections at the sensor
- Corrosion at electrical connectors
- Brake fluid level too low
- Damaged brake lines or leaks
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's best to fix it soon as it might affect braking performance.
Will the code come back after clearing?
If the sensor or underlying issue isn't fixed, yes, it will likely come back.
Why is this code paired with other SPNs?
Multiple sensors monitor brake-related functions; if one fails, others may be affected.
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