ECD SYSTEM (for Swirl Control Valve), Diagnostic DTC:P042F

DTC Code DTC Name
P042F Exhaust Gas Recirculation "A" Control Stuck Closed

DESCRIPTION

Refer to DTC P0401 Click here.

Tech Tips

For more information on the EGR control, refer to System Description Click here.

DTC No. DTC Detection Condition Trouble Area
P042F

Either condition is met (3 trip detection logic):


  • When EGR valve is determined to be stuck closed for 5.7 seconds.

  • EGR valve offset learning is not performed.

 EGR valve assembly

WIRING DIAGRAM

Refer to DTC P0405 Click here.

INSPECTION PROCEDURE

Note

After replacing the EGR valve assembly, the ECM needs initialization Click here.

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. PERFORM EGR VALVE POSITION LEARNING


    1. Restart the engine 3 times and keep the engine speed above 3000 rpm for 3 seconds each time.


    NEXT

  2. CHECK WHETHER DTC OUTPUT RECURS (DTC P042F)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs Click here.

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Read the DTCs.

      Result
      Result Proceed to
      DTC P042F A
      No DTC output B

    B

    END

    A

  3. REPLACE EGR VALVE ASSEMBLY


    1. Replace the EGR valve assembly Click here.

    2. Perform EGR learning value reset Click here.


    NEXT

  4. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs Click here.

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END