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Home >> Hyundai >> 2025 >> Kona SEL, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0 (13 Of 15) >> DTC P2271-00: O2 Sensor Signal Stuck Rich (Bank 1 Sensor 2) >> DTC Inspection >> Final DTC Checking

Final DTC Checking

  1. After connecting the GDS, perform self-diagnosis to check the "Fault code (DTC)".
  2. Clear the stored fault code using a diagnostic tool.
  3. The system operates according to the DTC detection condition of the failure judgment condition.
  4. Perform self-diagnosis with GDS to check if the fault code has reoccurred.

    Fault Code Regeneration/NG 

    Case1) some of the procedures are missing on the flow chart

    • Go on to the missing procedure.

    Fault Code Regeneration/NG 

    Case2) If the same DTC returns, even though mechanic has completed the whole procedure in the flow chart,

    • It is possible to suspect PCM failure. Refer to the following to proceed with the PCM pass/fail decision.

    no fault code/NG 

    System is now working properly.

    Release the vehicle.

    Information 

    1. Replace the good PCM by referring to the appropriate service information .
    2. After replacing the PCM, make sure to proceed with the "Vehicle S/W Management" procedure.
    3. If the fault code is cleared after installing the non-defective PCM: It is determined that the PCM is defective and the vehicle is shipped with the non-defective PCM replaced.
    4. If the fault code is not cleared after installing the non-defective PCM: The existing controller cannot be determined as the cause of the fault.

      In this case, place the existing PCM again, and check for the whole inspection flow again.