Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    CAN data bus, cruise control - no signal
Cause:
    Cruise control trouble code(s) stored, wiring, matching resistor in ECM

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Theft Deterrent Fuel Enable Signal Not Received Conditions
Cause:
    Key on, then the PCM received an unrecognized password from the IPC (controller) or it received a "bad" timing cycle from the IPC.

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    CAN data bus, cruise control - no signal
Cause:
    Cruise control trouble code(s) stored, wiring, matching resistor in ECM