Take the appropriate action and verify that the warning light turns off.

Taking Action
Message Indicated on DisplayMazda 6 Owners Manual: Emission Control System
This vehicle is equipped with an emission control system (the catalytic converter
is part of this system) that enables the vehicle to comply with existing exhaust
emissions requirements.
WARNING
Never park over or near anything flammable: Parking over or near
anything flammable, such as dry ...
Mazda 6 Owners Manual: Lane Departure Warning
If the system determines that the vehicle may deviate from its lane, the lane
departure warning (beep sound, rumble sound*1, or steering wheel vibration) is activated
and the direction in which the system determines that the vehicle may deviate is
indicated in the multi-information display and ...