You will need a code reader that plugs into the on board diagnostics port. There are a bunch of options available for code readers. Run a google search and you'll get a ton of options to choose from.
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Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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