Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Nitrogen oxides (NOx) heater sensor - open circuit
Cause:
    Wiring open circuit, NOx sensor

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Nitrogen oxides (NOx) heater sensor - open circuit
Cause:
    Wiring open circuit, NOx sensor