ECD SYSTEM, Diagnostic DTC:P209F, P20BA

DTC Code DTC Name
P209F Reductant Tank Heater Control Circuit Performance
P20BA Reductant Heater "A" Control Circuit Performance

DESCRIPTION

Refer to DTC P202B Click here.

P209F
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Reductant Tank Heater (Active Test)

When the tank heater is operating (temperature sensor value is equal to or less than a fixed value), overcurrent is detected multiple times.

(1 trip detection logic).

 Urea pump
P20BA
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Reductant Pipe Heater (Active Test)

When the urea tube with heater is operating (ambient temperature sensor value is equal to or less than a fixed value), overcurrent is detected multiple times.

(1 trip detection logic).

 Urea tube with heater assembly

INSPECTION PROCEDURE

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. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

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

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

    4. Read the DTCs.

      Result
      Result Proceed to
      DTC P209F or P20BA is output A
      DTC P209F or P20BA and other DTCs are output* B

      Tech Tips

      *: If any other DTCs (CAN communication malfunctions or open/short circuits) are output, perform troubleshooting for those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. CHECK AROUND BOTTOM OF VEHICLE


    1. Check around the bottom of the vehicle.

      Tech Tips

      If the urea solution dries on an object, deposition occurs and leaves behind a white powder.

      Area to check:


      • Areas connecting the urea pump and urea injector set.

      • Perforations in the urea tank sub-assembly.

      • Connectors not connected properly

      • Clogging of the cooling fins of the urea injector set

        Tech Tips

        If the cooling fins are clogged with foreign matter, remove the foreign matter and clean the cooling fins.

    2. Repair any trouble areas.


    NEXT

  3. PERFORM ACTIVE TEST USING GTS (REDUCTANT PURGE)


    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 at least 30 seconds.

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

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Reductant Pump Check (Backward).

    7. Perform the Active Test.

    8. Enter the following menus: Powertrain / Engine and ECT / Active Test / Reductant Purge.

    9. Perform the Active Test.

      Tech Tips

      Perform the Reductant Purge to draw the urea solution back into the urea tank sub-assembly from the urea injector set.


    NEXT

  4. CHECK DTC OUTPUT (P209F)


    1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Reductant Tank Heater.

    2. Perform the Active Test.

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

    4. Read the DTCs.

      Result
      Result Proceed to
      DTC P209F is output A
      DTC is not output B

    A

    REPLACE UREA PUMP Click here

    B

  5. CHECK DTC OUTPUT (P20BA)


    1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Reductant Pipe Heater.

    2. Perform the Active Test.

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

    4. Read the DTCs.

      Result
      Result Proceed to
      DTC P20BA is output A
      DTC is not output B

    A

    REPLACE UREA TUBE WITH HEATER ASSEMBLY Click here

    B

    CHECK CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. REPLACE UREA PUMP


    1. Replace the urea pump Click here.


    NEXT

    CHECK CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  7. REPLACE UREA TUBE WITH HEATER ASSEMBLY


    1. Replace the urea tube with heater assembly Click here.


    NEXT

  8. CHECK 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 at least 30 seconds.

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

    6. Using the GTS, perform the following Active Tests.


      • To check DTC P209F:

        Enter the following menus: Powertrain / Engine and ECT / Active Test / Reductant Tank Heater.

      • To check DTC P20BA:

        Enter the following menus: Powertrain / Engine and ECT / Active Test / Reductant Pipe Heater.

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

    8. Confirm that the DTC is not output again.


    NEXT

    END