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Re: 2003 Hyundai Elantra and a check engine light!
Posted to Technical Discussion Forum on 4/4/2011

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I finally found the ECM update too! The calibration number J3NOSK4A is updated to J3NOSK4C and then J3NOSK4C is updated to J3NOSK4D. However, that ECM calibration number is listed as the M/T calibrat... Login to read more.