DM IATcode has sent you to HFM , and that verifies IAT sig as suspect.
So, I would first ohm that sensor at stabilized room temp [20C]
Looking for 2500 Ohm.

I would also clean the element w/MAF cleaner.

Codes on 14 ae stop ;lamp sw, which I would chamge..and look that you have 1/4" slack in the cable and that it is not sticking.
These codes are not common to a bad harness. But that does not mean the harness is good.

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A Dalton