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Home >> Cadillac >> 2021 >> CT5 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 3.0L (LGY) - Description And Operation) >> Description and Operation >> Engine Control Module Description >> Emissions Diagnosis For State I/M Programs

Emissions Diagnosis For State I/M Programs

WARNING: This page is about a different variant/trim than selected.

This OBD II equipped vehicle is designed to diagnose any conditions that could lead to excessive levels of the following emissions;

Should this vehicle's on-board diagnostic system (ECM) detect a condition that could result in excessive emissions, the ECM turns ON the MIL and stores a DTC that is associated with the condition.