Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Engine coolant heater relay 1, low output
Cause:
    Wiring, engine coolant heater relay

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Engine coolant heater relay 1, low output
Cause:
    Wiring, engine coolant heater relay