Inspection/Maintenance System DTCS: Description
WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. 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:
Catalyst System
- P0420 - Catalyst System Low Efficiency
EGR System
- P0401- EGR Flow Insufficient
- P0404 - EGR Open Position Performance
- P0405 - EGR Position Sensor Circuit - Low Voltage
- P1404 - EGR Closed Position Performance
EVAP System
- P0440 - EVAP System
- P0442 - EVAP System Small Leak Detected
- P0446 - EVAP Vent System Performance
- P0447 - EVAP Vent Valve Control Circuit - Low Voltage
- P1441 - EVAP System Flow During Non-Purge
Oxygen Sensor System
- P0133 - HO2S/O2S Slow Response (Sensor 1)
- P0140 - HO2S Circuit Insufficient Activity (Sensor 2)
- P1133 - HO2S Insufficient Switching (Sensor 1)
- P1134 - HO2S Transition Time Ratio (Sensor 1)
Oxygen Sensor Heater System
- P0135 - HO2S Heater Performance (Sensor 1)
- P0141 - HO2S Heater Performance (Sensor 2)
Diagnose affected DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .