Action Taken When the DTCs Sets

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

The device suspends all message transmission.
The device uses default values for all parameters received on the serial data circuits.
In the transmission control module, DTC U0073 will cause the transmission to go into default gears.
In the engine control module and transmission control module, DTC U0073 will cause the malfunction indicator lamp (MIL) to illuminate.
If equipped with eAssist, DTC U0073 in the hybrid powertrain control module is a type B DTC and will cause the malfunction indicator lamp to illuminate and result in the engine operating in conventional engine mode and will maintain 14 V module operation.
The device inhibits the setting of all other communication DTCs.