Result:

p1664

Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Injector, activation - current circuit
Cause:
    Wiring open circuit/short to ground

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

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Injector, activation - current circuit
Cause:
    Wiring open circuit/short to ground

Look for code