When Monitored and Set Condition:
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored: Continuously.
Set Condition: If the CTM detects that the voltage on the cylinder lock switch mux circuit is over 5.5 volts or below 0.3 volts, this code will set.