Druga sonda jest sondą diagnostyczną dla katalizatorów, więc do sprawdzenia sonda 1, co do drugiego błędu 

 17545/P1137/004407 - Fuel Trim: Bank 1 (Add): System too Rich
Possible Symptoms
    Malfunction Indicator Light (MIL) active 
Possible Causes
    Mass Air Flow (MAF) Sensor faulty
    Fuel Pressure Regulator faulty
    Fuel Injector(s) faulty
    Oxygen Sensor Control faulty
        Oxygen Sensor(s) faulty 
    Evaporative Emission (EVAP) System faulty 
Possible Solutions
    Check Mass Air Flow (MAF) Sensor
    Check Fuel Pressure Regulator
    Check Fuel Injector(s)
    Check Oxygen Sensor Control
        Check Oxygen Sensor(s) 
    Check Evaporative Emission (EVAP) System