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Checking DTC history?

Lyftiduft

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Joined
Oct 10, 2025
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Location
Iceland
Vehicle(s)
2022 Rubicon 4xe
Hi everyone, I'm a new JL owner and the car might have had an undisclosed issue from the previous one so I need to "date" when certain codes appeared.

I know DTCs contain at least mileage for when they appear but does clearing the codes "reset" the saved mileage? Does the computer keep a log somewhere of all DTCs that have appeared, including cleared and inactive ones? I got myself an OBDlink MX+ recommended for Jscan but I haven't figured out how to see the mileage of DTCs for myself or access some kind of history, is that something I can do or would I need to visit the dealership for that?

Thanks so much for any information provided.
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