U0100

The U0100 error code in a Volkswagen Tiguan (First Generation, 2007-2018) indicates a loss of communication with the Engine Control Module (ECM). This can lead to various performance issues and may require diagnostic and repair procedures to resolve.

The U0100 code indicates a loss of communication with the Transmission Control Module (TCM) in the Volkswagen Tiguan Second Generation (2018-present). This code typically suggests an issue in the communication line between the TCM and the engine control unit (ECU).