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Home >> Kia >> 2016 >> Optima SX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0L (2 Of 3) - Optima (Except HEV) >> DTC P0605-00: Internal Control Module Read Only Memory (ROM) Error >> Component Inspection
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Component Inspection

  1. Turn Ignition "OFF" and then "ON"
  2. Monitor "Diagnostic Trouble Codes (DTC)" with KDS/GDS.
  3. Clear all DTCs in the system with KDS/GDS.
  4. Re-check DTC in the system with KDS/GDS.
  5. Are any DTCs stored in the system?

    YES 

    NO 

    • Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
    • Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.