ECD SYSTEM(for Swirl Control Valve), Diagnostic DTC:P1268

DTC Code DTC Name
P1268 EGR Valve Permanent Positive Governor Deviation

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
P1268

The control deviation of the EGR exceeds the maximum or minimum limit value for 4 seconds.

(3 trip detection logic)

 EGR valve assembly

WIRING DIAGRAM

Refer to DTC P0405 Click here.

CAUTION / NOTICE / HINT

Note


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

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • 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. REPLACE EGR VALVE ASSEMBLY


    1. Replace the EGR valve assembly Click here.

    2. Perform EGR learning value reset Click here.


    NEXT

  2. CHECK WHETHER DTC OUTPUT RECURS


    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