See also:

If the light is blinking
If the light is blinking while driving, an engine misfire condition has been detected which may damage the emission control system. To prevent serious damage to the emission control system, you shoul ...

State emission testing (U.S. only)
WARNING Testing of an All-Wheel Drive vehicle must NEVER be performed on a single two-wheel dynamometer. Attempting to do so will result in uncontrolled vehicle movement and may cause an accident ...

Air filtration system
Replace the filter element according to the replacement schedule as follows. This schedule should be followed to maintain the filter’s dust collection ability. Under extremely dusty conditions ...