High pitched ringing from ODBII area

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laserdance

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Joined
Nov 27, 2022
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Location
Texas
I've been a lurker for the past year here and needed to ask this question as lately it's been driving me nuts.

I have a 22 raptor and as soon as I turn accessory power ON (engine still off), I hear a click from the driver side ODBII area and a high-pitched, electronic noise starts. It doesn't go away until the truck is turned off.

Has anyone gone through diagnosing this? I don't believe it is speaker related (although I also have a separate issue where the right headrest speaker on driver side buzzes intermittently).

Thanks so much!
 
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