Inspection/Maintenance System DTCS: Description

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

Catalyst System 

• P0420 - Catalyst System Low Efficiency

EVAP System 

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

Oxygen Sensor System 

• P0133 - HO2S Slow Response
• P0140 - HO2S Circuit Insufficient Activity (Bank1; Sensor 2)
• P1133 - HO2S Insufficient Switching (Bank 1; Sensor 1)

Oxygen Sensor Heater System 

• P0141 - HO2S Heater Performance (Bank 1; Sensor 2)

Diagnose affected DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .