Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    AC signal - short to positive
Cause:
    Wiring

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Skip Shift 1 To 4 Upshift System Control Circuit
Cause:
    Engine speed over 600 rpm, then the PCM detected the commanded state of the Upshift driver and the Actual state of the control circuit did not match, all conditions met for over 5 seconds

Saab
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    AC relay - short to positive
Cause:
    Wiring short to positive, connectors, AC relay

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    AC signal - short to positive
Cause:
    Wiring