Check Engine Light Issue

Hey guys, I recently bought a 2019 Mitsubishi Outlander, and everything was going great until a few days ago when the check engine light suddenly came on. My mechanic friend disconnected the battery and plugged it back in, which cleared the light for a day, but now it's back again.

Has anyone else faced this issue? Any idea what could be causing it? Would really appreciate some advice before taking it to the workshop. Thanks!