You need to check the electrical part of the ignition switch as it should not stay running with key in the off position and also should not try to crank when you are in process of turning it off.
Not sure how it’s all held together on the ignition barrel but it sounds like it’s got loose and is moving around.
You are not going to have any codes because technically nothing is wrong as such.. if it is a loose electrical portion of switch then it’s moving as you turn the key so it does not reach the crank stage as the whole unit may have turned rather than the insides clicking round.