Inspection/Maintenance System DTCS: Description

The following DTCs are required to set system status to YES:

Catalyst System 

• P0420 - TWC System - Low Efficiency (Bank 1)

EVAP System 

• P0440 - EVAP System
• P0442 - EVAP Control System - Small Leak Detected
• P0446 - EVAP Vent System Performance
• P1441 - EVAP System Flow During Non-Purge

Oxygen Sensor 

• P0133 - HO2S Slow Response - Sensor 1
• P0140 - HO2S 2 Circuit - Insufficient Activity
• P1133 - HO2S Insufficient Switching - Sensor 1

Oxygen Sensor Heater 

• P0135 - HO2S Heater Circuit - Sensor 1
• P0141 - HO2S 2 Heater Circuit

Diagnose affected DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .