Conditions for Setting the DTC
WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
B3623
The distance sensing cruise control gap switch circuit has an invalid signal.
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 above condition is present for greater than 2 seconds.
- The ECM runs this diagnostic continuously.
P155A
The ECM is unable to determine the state of the cruise control switch.
P162C
The ECM is unable to determine the state of the vehicle speed limiting switch.