Inspection/Maintenance (I/M) System DTC Table. Buick LaCrosse 2009

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Inspection/Maintenance (I/M) System DTC Table

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--Refer to DTC P0420.

Evaporative Emission (EVAP)

•	DTC P0442--Refer to DTC P0442.

•	DTC P0446--Refer to DTC P0446.

•	DTC P0455--Refer to DTC P0455.

•	DTC P0496--Refer to DTC P0496.

Oxygen Sensor

•	DTC P0140--Refer to DTC P0133, P0134, P0140, P1133, P1134, P2270, P2271, or P2A00.

•	DTC P1133--Refer to DTC P0133, P0134, P0140, P1133, P1134, P2270, P2271, or P2A00.

•	DTC P2270--refer to DTC P0133, P0134, P0140, P1133, P1134, P2270, P2271, or P2A00.

•	DTC P2271--refer to DTC P0133, P0134, P0140, P1133, P1134, P2270, P2271, or P2A00.

Oxygen Sensor Heater

•	DTC P0135--Refer to DTC P0030, P0036, P0053, P0054, P0135, or P0141.

•	DTC P0141--Refer to DTC P0030, P0036, P0053, P0054, P0135, or P0141.

Exhaust Gas Recirculation (EGR)

•	DTC P0401--Refer to DTC P0401.

•	DTC P0403--Refer to DTC P0403, P0404, P0405, P0406, or P042E.

•	DTC P0404--Refer to DTC P0403, P0404, P0405, P0406, or P042E.

•	DTC P0405--Refer to DTC P0403, P0404, P0405, P0406, or P042E.

•	DTC P0406--Refer to DTC P0403, P0404, P0405, P0406, or P042E.

•	DTC P042E--Refer to DTC P0403, P0404, P0405, P0406, or P042E.

Secondary AIR

•	DTC P0411--Refer to DTC P0411, P0412, P0418, P2440, or P2444.

•	DTC P0412--Refer to DTC P0411, P0412, P0418, P2440, or P2444.

•	DTC P0418--Refer to DTC P0411, P0412, P0418, P2440, or P2444.

•	DTC P2430--Refer to DTC P2430-P2433.

•	DTC P2431--Refer to DTC P2430-P2433.

•	DTC P2432--Refer to DTC P2430-P2433.

•	DTC P2433--Refer to DTC P2430-P2433.

•	DTC P2440--Refer to DTC P0411, P0412, P0418, P2440, or P2444.

•	DTC P2444--Refer to DTC P0411, P0412, P0418, P2440, or P2444.