Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Long term fuel trim 1, Bank 1 - above rich limit
Cause:
    Fuel pressure/pump, injectors, EVAP canister purge valve, EGR system, HO2S, intake/exhaust system

Honda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Air fuel (AF) ratio sensor - front - range/ performance problem
Cause:
    AF ratio sensor

Infiniti
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Intake manifold air control system - vacuum check switch circuit malfunction
Cause:
    Wiring, vacuum check switch, hose leak/ blockage, air control solenoid, ECM

Nissan
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Intake manifold air control system - vacuum check switch circuit malfunction
Cause:
    Wiring, vacuum check switch, hose leak/ blockage, air control solenoid, ECM

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Long term fuel trim above rich limit
Cause:
    Fuel pressure/pump, injectors, EVAP canister purge valve, EGR system, HO2S, intake/exhaust system