If your check engine light is on and you have a red lightning bolt on your dashboard, it means that your vehicle's electronic throttle control system is malfunctioning. This can be caused by a number of things, such as a loose gas cap, dirty air filter, or faulty sensor.
To fix this problem, start by checking the gas cap to make sure it is tight. If it is loose, tighten it and see if the light goes off. If the light does not go off, check the air filter to see if it needs to be replaced. A dirty air filter can cause the throttle control system to malfunction. If the air filter is clean, then there may be a problem with one of the sensors in the system.