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DTC Setting Condition

WARNING: This page is about a different car, the 2020 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Trouble Shooting Condition Possible Cause
Prerequisite condition
  • Turn the ignition switch ON
  1. Faulty Smart Key unit (SMK IMMO unit)
Threshold value
  • Data error or timing error

    1. Data error: Communication Head value error, checksum value error, Faulty Smart Key unit (SMK IMMO unit)

    2. Timing Error: The interval of responses from the Smart Key unit (SMK IMMO unit) upon the ECM's request is longer than 40ms
Diagnosis time
  • 1.5 sec
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