Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Long term fuel trim, idling, Bank 2 - system too rich
Cause:
    Fuel pressure, injector(s), EVAP canister purge valve

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    HO2S Insufficient Switching
Cause:
    No PCM codes set, Low Coolant Level not on, test not completed this vehicle trip, then the PCM detected that less than 20 HO2S-12 R/L and L/R transitions occurred in a 120 second period in the test

Subaru
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Heated oxygen sensor (HO2S) heater control - range/performance problem
Cause:
    Wiring, HO2S, ECM

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Long term fuel trim, idling, system too rich
Cause:
    Fuel pressure, injector(s), EVAP canister purge valve