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)

EGR System 

• P0401
  
  EGR System
• P0404
  
  EGR System
• P0405
  
  EGR Sensor Circuit - Low Voltage
• P1404
  
  EGR System (Valve No. 2)

EVAP System 

• P0440
  
  EVAP System
• P0442
  
  EVAP System - 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 (Bank 1; Sensor 2)
• P1133
  
  HO2S Insufficient Switching (Bank 1; Sensor 1)
• P1134
  
  HO2S Transition Time Ratio (Bank 1; Sensor 1)

Oxygen Sensor Heater System 

• P0135
  
  HO2S Heater Performance
• P0141
  
  HO2S Heater Performance (Bank 1; Sensor 2)

Diagnose affected DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .