Other information:
Adding non-dealer accessories or making modifications to the vehicle can affect
vehicle performance and safety, including such things as airbags, braking, stability,
ride and handling, emissions systems, aerodynamics, durability, and electronic systems
like antilock brakes, traction control, and stability control...
This light is part of the vehicle’s emission control on-board diagnostic system.
If this light is on while the engine is running, a malfunction has been detected
and the vehicle may require service. The light should come on to show that it is
working when the ignition is on and the engine is not running...