Code
C0131
Brakes
Brake fluid pressure sensor circuit malfunction
The brake pressure sensor circuit has a fault.
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Most likely causes
- Faulty pressure sensor
- Wiring fault
- Hydraulic fault
Symptoms you may notice
- Brake warning light
- ABS/ESP disabled
Checks to run
- Test sensor voltage
- Check wiring
- Inspect brake fluid
Tools you may need
Multimeter
Brake fluid tester
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.