DTC Descriptor
WARNING: This page is about a different car, the 2008 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0073 00 Control Module Communication Bus Off
DTC U0073 71 ECU HS Bus Off
DTC U0073 72 ECU LS Bus Off
DTC U2100 00 Controller Area Network (CAN) Bus Communication
DTC U2100 47 Controller Area Network (CAN) Bus Communication