ECD SYSTEM(w/ DPF), Diagnostic DTC:P244C, P244E, P2458, P2463

DTC Code DTC Name
P244C Exhaust Temperature Too Low for Particulate Filter Regeneration Bank 1
P244E Exhaust Temperature Too Low for Particulate Filter Regeneration Bank 2
P2458 Diesel Particulate Filter Regeneration Duration
P2463 Diesel Particulate Filter Restriction - Soot Accumulation

DESCRIPTION

The DPF (Diesel Particulate Filter) is an emission control system which processes the particulate matter (PM) that is emitted from a diesel engine. The DPF catalyst converter has a porous ceramic structure which has a PM collecting function. The PM that is collected is continuously treated by oxidation due to catalytic action at high temperatures. However, however PM accumulation increases at low catalyst temperatures because the oxidation process slows down. The ECM performs PM forced regeneration so that the amount of accumulated PM does not exceed the threshold.

A01WPVCE01
Reference
*1 Oxidation Catalyst
*2 Enlarged Illustration
*3 Exhaust Gas
*4 DPF Catalyst
P244C (Bank 1), P244E (Bank 2)
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
PM forced regeneration

During PM forced regeneration, catalyst temperature does not increase sufficiently for 3 minutes.

(1 trip detection logic)

  • Monolithic converter assembly RH (for bank 1 CCo catalytic converter)

  • Monolithic converter assembly LH (for bank 2 CCo catalytic converter)

  • Front exhaust pipe assembly (for bank 1 DPF catalytic converter)

  • Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

  • Exhaust fuel addition injector assembly

  • No. 2 exhaust gas temperature sensor (B1S2)

  • No. 3 exhaust gas temperature sensor (B2S2)

  • No. 4 exhaust gas temperature sensor (B1S3, B2S3)

  • Exhaust fuel addition injector assembly (for bank 1, bank 2)

Common Inspection Item:


  • Fuel injection system

  • Intake/exhaust system

  • After treatment control system
P2458
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
PM forced regeneration

When PM forced regeneration is manually performed, PM forced regeneration does not finish even after 60 minutes or more elapse.

(1 trip detection logic)

  • Monolithic converter assembly RH (for bank 1 CCo catalytic converter)

  • Monolithic converter assembly LH (for bank 2 CCo catalytic converter)

  • Front exhaust pipe assembly (for bank 1 DPF catalytic converter)

  • Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

  • Exhaust fuel addition injector assembly

  • No. 2 exhaust gas temperature sensor (B1S2)

  • No. 3 exhaust gas temperature sensor (B2S2)

  • No. 4 exhaust gas temperature sensor (B1S3, B2S3)

  • Exhaust fuel addition injector assembly (for bank 1, bank 2)

Common Inspection Item:


  • Fuel injection system

  • Intake/exhaust system

  • After treatment control system
P2463
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
PM forced regeneration

While driving, PM accumulation amount exceeds the limit.

(1 trip detection logic)

  • Monolithic converter assembly RH (for bank 1 CCo catalytic converter)

  • Monolithic converter assembly LH (for bank 2 CCo catalytic converter)

  • Front exhaust pipe assembly (for bank 1 DPF catalytic converter)

  • Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

  • Exhaust fuel addition injector assembly

  • No. 2 exhaust gas temperature sensor (B1S2)

  • No. 3 exhaust gas temperature sensor (B2S2)

  • No. 4 exhaust gas temperature sensor (B1S3, B2S3)

  • Differential pressure sensor assembly

  • Exhaust fuel addition injector assembly (for bank 1, bank 2)

Common Inspection Item:


  • Fuel injection system

  • Intake/exhaust system

  • After treatment control system

Tech Tips

PM forced regeneration may be prohibited due to a fail-safe operation that is performed when another DTC is stored (including engine output limitation).

Related Data List
DTC No. Data List

P244C

P244E

P2458

P2463

  • Exhaust Fuel Addition FB

  • Exhaust Fuel Addition FB #2

  • Catalyst Differential Press

  • Catalyst Differential Press #2

MONITOR DESCRIPTION

The ECM monitors the differential pressure between the upstream and downstream of the DPF catalyst converter and also monitors exhaust gas temperature to detect a malfunction in the DPF catalyst converter.




CAUTION / NOTICE / HINT

Note


  • After replacing the ECM, the new ECM needs registration (See page ) and initialization Click here.

  • After replacing the fuel supply pump assembly, the ECM needs initialization Click here.

  • After replacing an injector assembly, the ECM needs registration Click here.

Tech Tips


  • If DTC P244B, P244C, P244E, P2458, P2463 or P2465 is stored, the fail-safe controls the engine power output and PM forced regeneration is prohibited. In this case, PM forced regeneration can be performed after disconnecting the EFI MAIN fuse or battery terminal and waiting for 60 seconds or more before connecting it again.

  • 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. READ OUTPUT DTC (RECORD STORED DTC AND FREEZE FRAME DATA)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Record the stored DTC and freeze frame data.

    6. Check "Exhaust Fuel Addition FB", "Exhaust Fuel Addition FB #2", "Catalyst Differential Press" and "Catalyst Differential Press #2" in the freeze frame data.

      Tech Tips


      • When the "Exhaust Fuel Addition FB" and "Exhaust Fuel Addition FB #2" values are 1.45 or more, it indicates a high possibility of insufficient temperature increase during PM regeneration control.

      • When the "Catalyst Differential Press" and "Catalyst Differential Press #2" values are 0.45 or more, it indicates a high possibility that DPF catalyst converter is clogged.


    NEXT

  2. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P244C, P244E, P2458 AND P2463)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Read the DTCs.

      Result
      Result Proceed to
      P244C, P244E, P2458 or P2463 is output A
      P244B or P2465 is output at the same time as P2463* B
      Only P2463 is output C
      Other relevant DTCs are output D

      Tech Tips


      • *: When P244B or P2465 is output at the same time as P2463, perform troubleshooting for P244B or P2465.

      • When DTC P1603, P1604 or P1608 is output in addition to P244C or P244E, perform troubleshooting for P1603, P1604 or P1608 first.


    A

    CHECK FOR BLACK SMOKE Click here

    B

    GO TO DTC P244B Click here

    C

    CHECK FUEL INJECTION SYSTEM Click here

    D

  3. GO TO DTC CHART


    1. Diagnose relevant DTCs Click here.


    NEXT

  4. CHECK FOR BLACK SMOKE


    1. Start the engine and drive the vehicle until the engine coolant temperature reaches 60°C (140°F) or higher.

    2. Stop the vehicle and allow the engine to idle.

    3. Fully depress the accelerator pedal for 5 seconds, and then release it [A].

    4. Repeat the above procedure [A] 10 times [B].

    5. Check for black smoke emission during procedures [A] and [B].

      OK
      Black smoke is emitted less than 5 times.

      Tech Tips

      Even if the black smoke is very thin, count the number of black smoke emissions if there is any visible smoke.


    OK

    CHECK FOR WHITE SMOKE (DURING PM FORCED REGENERATION) Click here

    NG

  5. REPLACE EXHAUST PIPE ASSEMBLIES (DPF CATALYTIC CONVERTERS)


    1. Even though it has been determined that the exhaust pipe assemblies (DPF catalyst converters) need to be replaced, make sure to perform all diagnostic procedures for P244C, P244E, P2458 and P2463 before replacing them.

      Tech Tips

      These DTCs are stored because an excessive amount of PM has accumulated and resulted in abnormal combustion. It is necessary to diagnose the cause of abnormal PM accumulation and repair the problem. Therefore, do not perform replacement at this time.


    NEXT

  6. CHECK FOR WHITE SMOKE (DURING PM FORCED REGENERATION)


    1. Clear the DTC and Exhaust Fuel Addition FB and Exhaust Fuel Addition FB #2 value by disconnecting the cable from the negative (-) battery terminal or removing the EFI MAIN fuse for 1 minute or more.

      Tech Tips


      • The accumulated PM volume stored in the ECM cannot be initialized using the GTS.

      • To perform PM forced regeneration, it is necessary to perform initialization of the accumulated PM volume stored in the ECM.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG) and turn the GTS on.

    4. Clear the DTCs Click here.

    5. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

    6. Perform PM forced regeneration Click here.

    7. Check if the temperature increases or abnormal white smoke occurs during PM forced regeneration.

      Result
      Result Proceed to
      During PM forced regeneration, temperature of Exhaust Temperature B1S3 and Exhaust Temperature B2S3 is 300 to 500°C and no white smoke is generated A
      During PM forced regeneration, temperature of Exhaust Temperature B1S3 and Exhaust Temperature B2S3 is 300 to 500°C and abnormal white smoke is generated*1 B
      Except above*2 C

      Tech Tips


      • *1: If abnormal white smoke is only generated during PM forced regeneration, there may be uncombusted fuel due to deterioration of the DPF catalyst converter.

      • *1: When there is a malfunction with combustion control, operation performance may be reduced and abnormalities may be felt even if PM forced regeneration is performed.

      • *2: An excess of accumulated PM is the result of a malfunction in the control system causing poor combustion and an increase in black smoke.


    B

    REPLACE EXHAUST PIPE ASSEMBLIES (DPF CATALYTIC CONVERTERS) Click here

    C

    CHECK FUEL INJECTION SYSTEM Click here

    A

  7. REPLACE EXHAUST FUEL ADDITION INJECTOR ASSEMBLY


    1. Even though it has been determined that the exhaust fuel addition injector assemblies need to be replaced, make sure to perform all diagnostic procedures for P244C, P244E, P2458 and P2463 before replacing them.

      Tech Tips

      These DTCs are stored because an excessive amount of PM has accumulated and resulted in abnormal combustion. It is necessary to diagnose the cause of abnormal PM accumulation and repair the problem. Therefore, do not perform replacement at this time.


    NEXT

    CHECK FUEL INJECTION SYSTEM Click here

  8. REPLACE EXHAUST PIPE ASSEMBLIES (DPF CATALYTIC CONVERTERS)


    1. Even though it has been determined that the exhaust pipe assemblies (DPF catalyst converters) need to be replaced, make sure to perform all diagnostic procedures for P244C, P244E, P2458 and P2463 before replacing them.

      Tech Tips

      These DTCs are stored because an excessive amount of PM has accumulated and resulted in abnormal combustion. It is necessary to diagnose the cause of abnormal PM accumulation and repair the problem. Therefore, do not perform replacement at this time.


    NEXT

  9. CHECK FUEL INJECTION SYSTEM


    1. Check the fuel injection system Click here.


    NEXT

  10. CHECK INTAKE / EXHAUST SYSTEM


    1. Check the Intake/exhaust system Click here.


    NEXT

  11. CHECK AFTER TREATMENT CONTROL SYSTEM


    1. Check the after treatment control system Click here.


    NEXT

  12. REPAIR OR REPLACE MALFUNCTIONING PARTS


    1. Determine the parts to replace according to the output DTCs.

      Result
      Result Items to be Replaced
      P244C is output

      • Monolithic converter assembly RH (for bank 1 CCo catalytic converter)

      • Front exhaust pipe assembly (for bank 1 DPF catalytic converter)

      • Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

      • Exhaust fuel addition injector assembly (for bank 1)
      P244E is output

      • Monolithic converter assembly LH (for bank 2 CCo catalytic converter)

      • Front exhaust pipe assembly (for bank 1 DPF catalytic converter)

      • Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

      • Exhaust fuel addition injector assembly (for bank 2)
      P2458 is output

      • Monolithic converter assembly RH (for bank 1 CCo catalytic converter)

      • Monolithic converter assembly LH (for bank 2 CCo catalytic converter)

      • Front exhaust pipe assembly (for bank 1 DPF catalytic converter)

      • Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

      • Exhaust fuel addition injector assembly (for bank 1)

      • Exhaust fuel addition injector assembly (for bank 2)
      P2463* is output

      • Monolithic converter assembly RH (for bank 1 CCo catalytic converter)

      • Monolithic converter assembly LH (for bank 2 CCo catalytic converter)

      • Front exhaust pipe assembly (for bank 1 DPF catalytic converter)

      • Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

      • Exhaust fuel addition injector assembly (for bank 1)

      • Exhaust fuel addition injector assembly (for bank 2)

      Tech Tips


      • Replace the following items only when it has been determined necessary based on diagnosis for P244C, P244E, P2458 and P2463.

      • Replace the DPF catalytic converter for bank 1 and bank 2 at the same time.

      • *: During the after treatment control system inspection performed when DTC P2463 is output, if Catalyst Differential Press and Catalyst Differential Press #2 decrease to 0.45 or less after forced regeneration is performed and there are no melted or clogged areas found when visually inspecting the CCo catalytic converter and DPF catalytic converter, then do not perform catalytic converter replacement.

    2. Replace the front exhaust pipe assembly (for bank 1 DPF catalytic converter) Click here.

    3. Replace the front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter) Click here.

    4. Replace the Monolithic converter assembly RH (for bank 1 CCo catalytic converter) Click here.

    5. Replace the Monolithic converter assembly LH (for bank 2 CCo catalytic converter) Click here.

    6. Replace the exhaust fuel addition injector assembly (for bank 1) Click here.

    7. Replace the exhaust fuel addition injector assembly (for bank 2) Click here.

    8. Repair or replace the malfunctioning part confirmed in the diagnosis of the fuel injection system, Intake/exhaust system and after treatment control system.


    NEXT

  13. CATALYST RECORD CLEAR


    1. Perform the catalyst record clear Click here.

      Tech Tips


      • If the DPF catalytic converter or CCo catalytic converter is replaced, perform "catalyst record clear".

      • If the DPF catalytic converter and CCo catalytic converter were not replaced, proceed to the next step.


    NEXT

  14. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Clear the DTCs Click here.

    4. Start the engine and warm it up until the engine coolant temperature reaches 60°C (140°F) or higher.

    5. Perform PM forced regeneration Click here.


    NEXT

    END