To prevent a runaway engine.
Lightning bolt flashing on dash.
This video is my explanation of the chrysler 300 s dreaded lightning bolt warning light.
The gas pedal is not mechanically connected to the engine.
Rough idle lightning bolt which kills the throttle will only idle to move vehicle.
The red lightning bolt in the center of a venturi is the warning lamp for the drive by wire or electronic throttle.
If the pcm recognizes a fault in the drive by wire it will react by reducing the gain opening the throttle significantly.
The lightning bolt icon on your dashboard alerts you to a problem with the electronic throttle control system in your 2014 dodge charger.
Discussion starter 1 jan 31 2016 edited.