DTC U0402-81: Invalid Data Received From TCM - Invalid serial data received: Action

NOTE:

This is not a vehicle harness issue or anti-lock brake system control module issue. The data source module, in this case the Transmission Control Module has sent information which it has marked as Invalid
In the case of battery electric vehicles, all transmission control module network handling is performed by the powertrain control module
Do NOT replace the anti-lock brake system control module for this DTC only

Using the Jaguar Land Rover approved diagnostic equipment, check the transmission control module for related Diagnostic Trouble Code(s) and refer to the relevant DTC index
Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and perform routine - On Demand Self Test (0x0202) for the transmission control module