Are the wires leading to your OBD2 port damaged or loose? That would cause an inconsistent connection. Also if you were using it in your CRZ you probably had the Scangauge configured in hybrid mode, change it to gas mode for the Jeep.
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2013 Toyota Prius C 2 (my car)
2015 Mazda 3 iTouring Hatchback w/ Tech Package (wife's car)
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