Code result
C0131
ABS/TCS Hydraulic Control Unit Pressure Circuit Malfunction
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Pressure sensor failed
highOne of the most commonly reported causes for this code — check this first.
Wiring or connector fault
mediumA plausible cause — test and verify before replacing parts.
Air in brake system causing erratic pressure
lowLess common, but worth ruling out after the more likely causes.
Related help
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