Important: Not all vehicles will have every diagnostic trouble code (DTC) listed in each section. For example, a vehicle may have only 2 oxygen sensors or 1 catalyst. Only those DTCs applicable to the vehicle are required to update each System Status to YES. Refer to the appropriate service manual to determine which DTCs are supported for each vehicle.
System | DTCs Required to Set System Status to YES |
|---|---|
Catalyst | DTC P0420 Catalyst System Low Efficiency |
EGR | DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient DTC P0404 Exhaust Gas Recirculation (EGR) Open Position Performance DTC P0405 Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage DTC P1404 Exhaust Gas Recirculation (EGR) Closed Position Performance |
EVAP | DTC P0440 Evaporative Emission (EVAP) System DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected DTC P0446 Evaporative Emission (EVAP) Vent System Performance DTC P1441 Evaporative Emission (EVAP) System Flow During Non-Purge |
Oxygen Sensor | DTC P0133 HO2S/O2S Slow Response Sensor 1 DTC P0140 HO2S Circuit Insufficient Activity Sensor 2 DTC P1133 HO2S Insufficient Switching Sensor 1 DTC P1134 HO2S Transition Time Ratio Sensor 1 |
Oxygen Sensor Heater | DTC P0135 HO2S Heater Performance Sensor 1 DTC P0141 HO2S Heater Performance Sensor 2 |
