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ECD SYSTEM (w/ DPF), Diagnostic DTC:P2084, P2086, P242B, P2467

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DTC Code DTC Name
P2084 Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
P2086 Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 2
P242B Exhaust Gas Temperature Sensor Circuit Range / Performance Bank 1 Sensor 3
P2467 Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 3
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DESCRIPTION

Refer to DTC P0545 (Click here).

Refer to DTC P0548 (Click here).

Table 1. P2084 (B1S2), P2086 (B2S2)
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Stop the engine, leave the vehicle as is for 1 to 2 hours and confirm that "Exhaust Temperature B1S2, B2S2" is approximately the same value as "Intake Air".

All conditions are met (2 trip detection logic):

(a) The battery voltage is 8 V or higher.

(b) After the engine is stopped and the vehicle is left as is for 10 hours or more, the difference between "Exhaust Temperature B1S2, B2S2" and "Coolant Temp" is 400°C (752 °F) or more when the engine switch is turned to on (IG).

  • No. 2 exhaust gas temperature sensor (B1S2)

  • No. 3 exhaust gas temperature sensor (B2S2)

  • Engine coolant temperature sensor

  • ECM (soak timer)
Table 2. P242B (B1S3), P2467 (B2S3)
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Stop the engine, leave the vehicle as is for 1 to 2 hours and confirm that "Exhaust Temperature B1S3, B2S3" is approximately the same value as "Intake Air".

All conditions are met (2 trip detection logic):

(a) The battery voltage is 8 V or higher.

(b) After the engine is stopped and the vehicle is left as is for 10 hours or more, the difference between "Exhaust Temperature B1S3, B2S3" and "Coolant Temp" is 400°C (752 °F) or more when the engine switch is turned to on (IG).

  • No. 4 exhaust gas temperature sensor (B1S3)

  • No. 4 exhaust gas temperature sensor (B2S3)

  • Engine coolant temperature sensor

  • ECM (soak timer)
Table 3. Related Data List
DTC No. Data List

P2084

P2086

P242B

P2467

  • Exhaust Temperature B1S2

  • Exhaust Temperature B2S2

  • Exhaust Temperature B1S3

  • Exhaust Temperature B2S3

  • Coolant temp

  • Intake Air
Tip:

  • Sensor 2 represents the sensor located upstream of the DPF catalytic converter.

  • Sensor 3 represents the sensor located downstream of the DPF catalytic converter.

  • If DTC P2084, P2086, P242B and/or P2467 is stored, the following symptoms may appear:


    • White smoke

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MONITOR DESCRIPTION

The ECM compares the values from the No. 2 exhaust temperature sensors (B1S2), No. 4 exhaust temperature sensors (B1S3), and No. 3 exhaust temperature sensors (B2S2), No. 4 exhaust temperature sensors (B2S3) with the engine coolant temperature when the engine switch is turned to on (IG) after the vehicle has been left soaking for 10 hours or more. If the difference is 400°C (752 °F) or more, a DTC indicating an exhaust gas temperature sensor malfunction is stored and the MIL is illuminated (2 trip detection logic).

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WIRING DIAGRAM

Refer to DTC P0545 (Click here).

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INSPECTION PROCEDURE

Note:

  • After replacing the ECM, the new ECM needs registration (Click here) 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).

Tip:

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.

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PROCEDURE


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    CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2084, P2086, P242B OR P2467)


    1. Connect the GTS to the DLC3.

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

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

    4. Read DTCs.

      Table 4. Result
      Result Proceed to
      P2084, P2086, P242B or P2467 is output A

      Except above

      P2084, P2086, P242B or P2467 and other DTCs are output

      		 B

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    READ VALUE USING GTS (EXHAUST TEMPERATURE)


    1. Leave the vehicle as is for 1 to 2 hours with the engine stopped.

    2. Connect the GTS to the DLC3.

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

    4. Enter the following menus: Engine and ECT / Data List / Exhaust Temperature B1S2, Exhaust Temperature B2S2, Exhaust Temperature B1S3 and Exhaust Temperature B2S3.

    5. Read the values.

      Result
      Result Proceed to
      Value of "Exhaust Temperature B1S2" is 400°C (752°F) or higher A
      Value of "Exhaust Temperature B1S3" is 400°C (752°F) or higher
      Value of "Exhaust Temperature B2S2" is 400°C (752°F) or higher
      Value of "Exhaust Temperature B2S3" is 400°C (752°F) or higher
      Except above B
      Tip:

      If the exhaust gas temperature sensor is normal, the exhaust gas temperature drops when the vehicle is left as is for 1 to 2 hours with the engine stopped. If the exhaust gas temperature does not drop, the exhaust gas temperature sensor may be malfunctioning.


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    READ VALUE USING GTS (ENGINE COOLANT TEMPERATURE)


    1. Allow the engine to soak for 1 to 2 hours.

      Tip:

      • It is not necessary to allow the engine to soak if the engine is cold.

      • The engine cools faster if the hood is opened.

    2. Connect the GTS to the DLC3.

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

    4. Enter the following menus: Engine and ECT / Data List / Coolant temp.

    5. Read the value.

      OK
      The difference between the displayed value and outside air temperature is below 5°C (9°F).
      Note:

      If the difference between "Coolant Temp" and the outside air temperature is 5°C (9°F) or higher, the heat from the engine affects the intake air temperature sensor, causing an incorrect value to be displayed. In this case, allow the engine to soak again.


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    INSPECT ENGINE COOLANT TEMPERATURE SENSOR


    1. Inspect the engine coolant temperature sensor (Click here).


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    REPLACE ENGINE COOLANT TEMPERATURE SENSOR


    1. Replace the engine coolant temperature sensor (Click here).


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    REPLACE ECM


    1. Replace the ECM (Click here).


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    REPLACE EXHAUST GAS TEMPERATURE SENSOR


    • When DTC P2084 is output:

      Replace the No. 2 exhaust gas temperature sensor (B1S2) (Click here).

    • When DTC P2086 is output:

      Replace the No. 3 exhaust gas temperature sensor (B2S2) (Click here).

    • When DTC P242B is output:

      Replace the No. 4 exhaust gas temperature sensor (B1S3) (Click here).

    • When DTC P2467 is output:

      Replace the No. 4 exhaust gas temperature sensor (B2S3) (Click here).


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    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Leave the vehicle as is for 1 to 2 hours with the engine stopped.

      Tip:

      • It is not necessary to allow the engine to soak if the engine is cold.

      • The engine cools faster if the hood is opened.

    2. Connect the GTS to the DLC3.

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

    4. Enter the following menus: Engine and ECT / Data List / Exhaust Temperature B1S2, Exhaust Temperature B1S3, Exhaust Temperature B2S2, Exhaust Temperature B2S3 and Intake Air.

    5. Read the value.

      OK
      The values of "Exhaust Temperature B1S2", "Exhaust Temperature B1S3", "Exhaust Temperature B2S2" and "Exhaust Temperature B2S3" are all approximately the same as "Intake Air".

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    GO TO DTC CHARTClick here

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    END