GM Service Manual Online
For 1990-2009 cars only

System

DTCs Required to Set System Status to YES

If an I/M System Status indicator did NOT update to YES during the Inspection/Maintenance (I/M) Complete System Set Procedure , review each indicator and reference this table to determine each DTC associated with the I/M System Status Indicator. Each DTC listed below has specific conditions that must be met for the diagnostic to run. Included within the conditions are additional DTCs which, if set, may inhibit the DTCs listed below from running. Reviewing and operating the vehicle within the Conditions for Running for each DTC listed below will allow the I/M System Status Indicators to transition to YES.

Catalyst Monitor

DTC P0420.

Evaporative Emission (EVAP)

    •  DTC P0442
    •  DTC P0446
    •  DTC P0455
    •  DTC P0496

Oxygen Sensor

DTC P0133, P0134, P0140, P1133, P1134, P2270, P2271, or P2A00

Oxygen Sensor Heater

DTC P0030, P0036, P0053, P0054, P0135, or P0141

Exhaust Gas Recirculation (EGR)

    •  DTC P0401

Secondary AIR

    •  DTC P0411
    •  DTC P0412 or P0418
    •  DTC P2430-P2433
    •  DTC P2440
    •  DTC P2444