What does it mean?
In transmissions with electronic shift controls, power is supplied to the transmission control module through the transmission control output circuit. This circuit provides the requisite power for the transmission control module, the transmission solenoid/pressure switch assembly, and the PCM under normal operating conditions. If the vehicle experiences a problem that requires the transmission to be put into limp mode, the transmission control output circuit voltage changes.
The transmission will engage in low gear as a self-protective measure and will not shift. When the engine is started or the key is turned to the run position, the transmission control module performs a system check. It looks for voltage on the transmission control circuit. If the circuit is open, it requests the transmission control circuit to be powered up from the PCM. If low voltage is detected, DTC P0882 is set.