BettyBlue21

after repairs were completed on my Ridgeline base on computer codes both coolant temp sensor was bad , replaced both but still cant reset the check engine light . tried removing both pole from battery and touch together and reconnect but still light on . how can i reset this light please help , I am about to deploy and my wife needs the truck for the kids . please help

tech8

The car stores various specific data in non-volatile memory even if there is no electrical power such as when the battery negative terminal or some fuses are disconnected. Only some system stored data is lost when the battery or some fuses are disconnected.

An OBD-II compatible scan tool can reset error (trouble) code(s) depending on the type of trouble code and the scan tool.

Even with the code(s) reset, the error messages will continue to show up if the problem/fault still exist or is detected. Some faults take more than one or more trips and/or conditions for them to trigger the Malfunction Indicator Lamp (aka Check Engine Light).

For some issues, if the problem gets corrected, the Check Engine Light go off on its own.

On another note, replacing sensors, etc. doesn't always resolve issues, as there may be other causes for the trouble code(s).