Conditions for Setting the DTC: C0138

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is set when the vehicle decelerates and the brake pressure signal does not increase. The criteria to set this DTC is listed below:

The vehicle decelerates from 25 km/h (16 mph) to 10 km/h (6 mph).
The vehicle decelerates at a rate of 8 km/h (5 mph) per second.
No increase in the brake pressure sensor signal is detected.