Conditions for Setting the DTC
WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
P0480
The commanded state of the ECM driver and the actual state of the control circuit do not match for greater than 5 seconds.
P0481
The commanded state of the ECM driver and the actual state of the control circuit do not match for greater than 5 seconds.