Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Throttle motor position sensor 1 - low input
Cause:
    Wiring short to ground, throttle motor position sensor

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Air Conditioning System Performance Conditions
Cause:
    Engine running, then the PCM detected that the A/C refrigerant charge was below a specified value (determined by the Evaporator Temperature and Refrigerant Pressure inputs)

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Throttle motor position low input
Cause:
    Wiring short to ground, throttle motor position sensor