Circuit Description

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

AIR System

1. P0410
   
   Secondary Air Injection System

Catalyst System

1. P0420
   
   Catalyst System Low Efficiency

EGR System

1. P0401
   
   EGR Flow Insufficient
2. P0404
   
   EGR Open Position Performance
3. P0405
   
   EGR Sensor Circuit - Low Voltage
4. P1404
   
   EGR Closed System Performance

EVAP System

1. P0440
   
   EVAP Emission System
2. P0442
   
   EVAP System - Small Leak Detected
3. P0446
   
   EVAP Vent Valve Control System
4. P1441
   
   EVAP System Flow During Non-Purge

Oxygen Sensor System

1. P0133
   
   HO2S Slow Response (Bank 1; Sensor 1)
2. P0140
   
   HO2S Circuit Insufficient Activity (Bank 1; Sensor 2)
3. P1133
   
   HO2S Insufficient Switching (Bank 1; Sensor 1)
4. P1134
   
   HO2S Transition Time Ratio (Bank 1; Sensor 1)

Oxygen Sensor Heater System

1. P0135
   
   HO2S Heater Circuit (Bank 1; Sensor 1)
2. P0141
   
   HO2S Heater Circuit (Bank 1; Sensor 2)

Diagnose affected DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .