A driver can continue operating a vehicle if the check engine light comes on and stays on, but the vehicle does not have any noticeable problems. A flashing check engine light indicates a more serious problem, and the driver should immediately pull over.Continue Reading
The check engine light may come on intermittently. The vehicle's computer retains a history code that a mechanic can retrieve and assess even if the check engine light is no longer on.
The check engine light may come on if the vehicle has a broken or loose hose, experiences engine misfire or has a problem with an air flow or temperature sensor. Lack of recommended maintenance can cause vehicle systems to work improperly, also causing the check engine light to come on.Learn more about Car Parts & Maintenance