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 ...

If the light illuminates steadily
If the light illuminates steadily while driving or does not turn off after the engine starts, an emission control system malfunction has been detected. You should have your vehicle checked by ...

Checking the fluid level when the fluid is cold
When the fluid level has to be checked without time to warm up the automatic transmission, check to see that the fluid level is between the lower level and upper level on the “COLD” range. If it i ...