How to Reset a Check Engine Light Mazda Engine Light Reset
Disconnecting the battery and stepping on the brake pedal a few seconds should reset it. It probably set an O2 heater code due to low voltage on startup. How to reset the Check Engine Light | Mazdas247 Resetting service light on Mazda5 CDI 2012 1.6 116hp Doing This Will Reset Your Car's Computer and Fix It for Free Subscribe for more daily vids ...