To turn off the check engine light in a car, either bring the car in to a mechanic or use a trouble code scanning tool, then fix the problem that is causing the light to be illuminated. If the light stays on and there is... More »

The best way to turn off the check engine light on a Nissan is to find out the engine code and have the problem fixed. The check engine light turns off automatically when the issue causing the light to turn on is resolve... More »

Clear a check engine light by disconnecting the battery cables and turning on the headlights to drain all of the electricity from the system. This makes the vehicle's computer perform a hard reset and extinguishes the ch... More »

A blinking check engine light means that the onboard diagnostic system detected a problem with the engine. A blinking light, rather than a steady light, often indicates a serious engine misfire. A driver with a blinking ... More »

The check engine light flashes yellow when the electronic-control system of an automobile finds a problem it cannot adjust. The computer stores a trouble code in its memory to help identify the probable source of the pro... More »

Resetting a check engine light requires completing a diagnostic test on car's computer, which varies up to $100, as of April 2015. Dealerships generally charge a higher cost to complete a diagnostic, while smaller shops ... More »

The check engine light illuminates on a Mazda to indicate the powertrain control module has detected a problem in the engine or transmission of the vehicle. The powertrain control module is a computer that manages the ve... More »