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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Parking Brake System Diagnosis (HEV) >> DTC C1646-02: CAN Message Failure - TCU >> DTC Inspection >> Monitor DTC Status

Monitor DTC Status

  1. Vehicle parked and Ignition switch 'ON'.
  2. Connect GDS and select "DTC Analysis" mode.
  3. Click "DTC Status" on the "Diagnostic Trouble Codes (DTC)" menu bar to see "DTC Information".
  4. If DTC Status is "Present" fault, then go to the next procedure, and if it is "History" fault, then clear DTC and check the same DTC reoccurs.
    G13843637Courtesy of HYUNDAI MOTOR AMERICA
  5. Is parameter displayed "Present" fault?

    YES 

    • Check DTCs related with TCM System (gear position, etc.). If there are the DTCs, repair them and then confirm deletion.
    • Repair or replace as necessary, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO