The ABS or stability control module has detected an implausible signal from the master cylinder brake pressure sensor. This sensor reports driver brake input and is used by ABS and ESP for control decisions.
Medium severity. Can I keep driving?Drive with caution and go to a repair shop. If it affects the brakes or steering, do not continue if you notice abnormal behavior.
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Most likely causes
- Pressure sensor failed
- Wiring or connector fault
- Air in brake system causing erratic pressure
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
What each character of C0131 means
- C: Chassis
- 0: Generic code: same on every make
- 1: Subsystem depends on the code range
- 31: Specific fault in that system
Frequently asked questions
Can I keep driving with code C0131?
Drive with caution and go to a repair shop. If it affects the brakes or steering, do not continue if you notice abnormal behavior.
What causes code C0131?
The most common causes are: pressure sensor failed; wiring or connector fault; air in brake system causing erratic pressure.
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.