What does a flashing lighting bolt mean?
What does a flashing lighting bolt mean? The lightning bolt on the dash means that there is a problem with the electronic throttle control system in your vehicle. Slowly depress the accelerator pedal all the way to the floor. Slowly release the accelerator pedal until it is all the way back up at the rest position. Turn the ignition key to "OFF" position. Why does my Dodge Ram have a lightning bolt? P1628 comes up as a faulty temperature sensor. Your PCM is likely shutting down your engine to protect it from overheating. They're pretty cheap, even Ma Mopar ones...