What happens if you reset check engine light?
What happens if you reset check engine light? Warnings. Erasing codes by disconnecting your vehicle's battery can also clear out the memory for your radio and other on-board components. This method is recommended as a last resort. The emissions monitors in your vehicle will register being reset, so you will not pass emissions if you bring in a car with the codes being reset. How do you remove a check engine light? Erasing the Code (Old Way) Disconnect your car's battery by removing the positive and negative cables. Press and hold your horn for 30 seconds to drain any remaining...