Malfunction Indicator Lamp: Description and Operation

Check Engine Lamp:

The check engine lamp, located on the instrument cluster, is used primarily to inform the driver of a malfunction in the following circuits or functions:
^Air flow meter
^Water temperature sensor
^Vehicle speed sensor
^Idle switch
^ECU calculation function
^EGR function
^O2 sensor
^EGR temperature sensor
^Throttle sensor
^Fuel injector leak
^Malfunctions related to emission system performance
Malfunctions that affect the emission system performance can be detected by performing MODE 3 (STORED CODES) TEST.
It will also flash simultaneously with the red diode on the ECU when extracting codes or when inspecting feedback operation.