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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 64 (HEV Motor System Diagnosis (HEV)) >> DTC U0129: Lost Communication With Brake System Control Module >> Scantool Diagnostics >> Monitoring DTC Status

Monitoring DTC Status

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON & Vehicle "STOP".
  2. Connect GDS and select "DTC Analysis" mode.
  3. Click "DTC Status" on the DTC menu bar to view DTC's information.
  4. Confirm that "DTC Readiness Flag" indicates "COMPLETED". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
  5. Read "DTC Status" parameter.
    Fig 1: Screen Display - DTC Information
    G10602592Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • History (Not Present) fault: DTC occurred but has been cleared.
    • Present fault: DTC is occurring at present time.
  6. Is parameter displayed "Present Fault"?

    YES 

    • Go to Next procedure.

    NO 

    • Fault is intermittent caused by poor contact in the sensor's and/or Control Module's connector or was repaired and Control Module's memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.