Conditions for Setting the DTC
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
B3794 08
The BCM detects an invalid voltage signal on the cruise control switch signal circuit for 1 second.
B3794 61
Stuck switch for either Resume/Accel or Set/Coast button for 60 seconds.
P0564, P0565, P0567, P0568, P056C
- The BCM detects an invalid voltage signal on the cruise control switch signal circuit for greater than 2 seconds and sends a serial data message to the ECM. The ECM sets these DTCs when the message is received.
- The ECM runs this diagnostic continuously.
P0580, P0581
- The ECM detects an invalid voltage signal on the cruise control switch signal circuit.
- The ECM runs this diagnostic continuously.
P0589, P0592, P0593
- The ECM detects and invalid voltage signal on the cruise control switch 2 signal circuit.
- The ECM runs this diagnostic continuously.
P155A
The ECM is unable to determine the state of the cruise control switch.
P155B, P155C
- The ECM sets these DTCs when the associated cruise switch is active for greater than an allowed duration.
- The ECM runs this diagnostic continuously.