Conditions for Setting the DTC

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

C0131 00

Sensor supply voltage is less than 4.5 volts or greater than 5.3 volts for more than 1 sec.
Sensor signal voltage is less than 0.12 volts or greater than 3.2 volts for more than 1 sec.

C0131 3A or 4B

EBCM has been replaced and the calibration to the brake pressure sensor has not been programmed or is outside of programed range.