Disconnecting the battery or switching off all power and leaving it and putting it back on again will fix nothing that’s an old school fix for early ECU’s with EPROMs. For over 20 years cars ECU’s have used E2PROM’s (difference is they now use Electronically ERASABLE Programable Read Only Memories) tats why you use your code reader to read and then delete the codes.
Br
Colin
Good point - I'm still on the old stuff
