Conditions for Setting the DTC

U1500 01 

When there is a short to voltage in the local interconnect network bus circuit.

U1500 02 

When there is a short to ground in the local interconnect network bus circuit.

U1500 31 

The module has detected an internal malfunction.

U1511, U1512 

The DTC will set when there is an open/high resistance in the local interconnect network bus circuit, or an open in the voltage or ground circuits of the motor or module.