Inspection/Maintenance System DTCS: Description
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
The following DTCs are required to set system status to YES:
AIR - Secondary Air Injection (AIR) System
Catalyst System
- P0420: Catalyst System - Low Efficiency.
EGR
- DTC P0401: EGR Flow Insufficient
- DTC P0404: EGR Open Position Performance
- DTC P0405: EGR Position Sensor Circuit - Low Voltage
- DTC P1404: EGR Closed Position Performance
EVAP System
- P0440: Evaporative Emission System
- P0442: Evaporative Emission Control System - Small Leak Detected
- P0446: EVAP Vent System Performance
- P1441: Evaporative Emission System Flow During Non-Purge
Oxygen Sensor
- P0133: HO2S 1 - Slow Response
- P0140: HO2S 2 Circuit - Insufficient Activity
- P1133: HO2S 1 - Insufficient Switching
- P1134: HO2S 1 Transition Time Ratio
Oxygen Sensor Heater
- P0135: HO2S 1 - Heater Performance
- P0141: HO2S 2 - Heater Performance
Diagnose affected DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .