DTC    P2080    Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1

DTC    P2084    Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2

for Preparation Click here


DESCRIPTION

Refer to DTC P0545 (Click here).

P2080 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
5 minutes elapsed after engine start
The actual exhaust gas temperature sensor B1S1 output differs from the estimate exhaust gas temperature sensor more than threshold for 8 seconds or more.
(1 trip detection logic)
  1. Open or short in exhaust gas temperature sensor B1S1 circuit
  2. Exhaust gas temperature sensor B1S1
  3. Leak or blockage in intake or exhaust system
  4. Blockage in EGR passage
  5. Electric EGR valve assembly
  6. Turbo pressure sensor
  7. Turbocharger sub-assembly
  8. Mass air flow meter
  9. Injector assembly
  10. ECM

P2084 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
5 minutes elapsed after engine start
The actual exhaust gas temperature sensor B1S2 output differs from the estimate exhaust gas temperature sensor more than threshold for 8 seconds or more.
(1 trip detection logic)
  1. Open or short in exhaust gas temperature sensor B1S2 circuit
  2. Exhaust gas temperature sensor B1S2
  3. Leak or blockage in intake or exhaust system
  4. Blockage in EGR passage
  5. Electric EGR valve assembly
  6. Turbo pressure sensor
  7. Turbocharger sub-assembly
  8. Mass air flow meter
  9. Injector assembly
  10. ECM

Related Data List 
DTC No.
Data List
P2080
  1. Exhaust Temperature B1S1
  2. Exhaust Temperature B1S2
P2084

HINT:
  1. Sensor 1 represents a sensor located before the CCo catalytic converter.
  2. Sensor 2 represents a sensor located before the DPF catalytic converter.
  3. If DTC P2080 and/or P2084 is stored, the following symptoms may appear:
    1. White smoke


MONITOR DESCRIPTION

When the vehicle is being driven, the ECM monitors the exhaust gas temperature comparing between the estimate and the actual temperature based on the values of the exhaust gas temperature sensors B1S1 and B1S2. If the difference between the estimate and the actual temperature is more than the threshold, the ECM interprets this as a malfunction in the exhaust gas temperature sensor and stores DTCs.

WIRING DIAGRAM

Refer to DTC P0545 (Click here) and DTC P0548 (Click here).

INSPECTION PROCEDURE

NOTICE:
When replacing the ECM and/or fuel injector, the ECM needs Registration and Initialization (Click here).

HINT:
  1. When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
  2. Read freeze frame data using the intelligent tester. 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.

1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2080 AND P2084)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read DTCs.
    Result 
    Result
    		Proceed to
    P2080 and/or P2084 and P0545, P0546, P0548 and/or P0549
    		A
    Except above
    		B

HINT:
If DTCs related to open/short circuit of exhaust gas temperature sensor other than P2080 and/or P2084 are output, perform troubleshooting for those DTCs first.



B
Go to step 2
A

GO TO DTC CHART (Click here)  

2.CHECK HARNESS AND CONNECTOR (EXHAUST GAS TEMPERATURE SENSOR - ECM)


    A200361E01

  1. Disconnect the exhaust gas temperature sensor connector.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    B22-2 (THCI) - A19-50 (THCI)
    		Always
    		Below 1 Ω
    B22-1 (E2) - A19-51 (ETCI)
    		Always
    		Below 1 Ω
    A38-1 (THCO) - A19-48 (THCO)
    		Always
    		Below 1 Ω
    A38-2 (E2) - A19-49 (ETCO)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    B22-2 (THCI) or A19-50 (THCI) - Body ground
    		Always
    		10 kΩ or higher
    B22-1 (E2) or A19-51 (ETCI) - Body ground
    		Always
    		10 kΩ or higher
    A38-1 (THCO) or A19-48 (THCO) - Body ground
    		Always
    		10 kΩ or higher
    A38-2 (E2) or A19-49 (ETCO) - Body ground
    		Always
    		10 kΩ or higher

    *1
    		Front view of wire harness connector
    (to Exhaust Gas Temperature Sensor B1S1)
    *2
    		Front view of wire harness connector
    (to Exhaust Gas Temperature Sensor B1S2)
    *3
    		Front view of wire harness connector
    (to ECM)

  1. Reconnect the exhaust gas temperature sensor connector.

  1. Reconnect the ECM connector.



NG
Go to step 8
OK


3.READ VALUE USING INTELLIGENT TESTER (EXHAUST TEMPERATURE B1S1 AND B1S2)

  1. Stop the engine and wait for 30 seconds or more.

  1. Start the engine.

  1. Allow the engine to idle for 5 minutes.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Exhaust Temperature B1S1 and Exhaust Temperature B1S2.

  1. Read the values.

    NOTICE:
    Confirm the PM regeneration is not operating.

    HINT:
    When reading the values of Data List, confirm that PM regeneration is not activating (value of "After Injection Period" is 0) by entering the following menus: Powertrain / Engine and ECT / Data List / After Injection Period.
    If PM regeneration is activating (value of "After Injection Period" is not 0), drive the vehicle until the PM regeneration is complete (value of "After Injection Period" becomes 0).

    Standard:
    Exhaust Temperature B1S1 and Exhaust Temperature B1S2 display between 80 to 300°C (176 to 572°F).
    Difference between Exhaust Temperature B1S1 and Exhaust Temperature B1S2 should be within +/-100°C (212°F).

HINT:
For reference, the results of a "real-vehicle check" are as shown in the table below:

NOTICE:
In the table below, the values listed are reference. Do not depend solely on these reference values when deciding whether a part is faulty or not.


Exhaust Temperature B1S1 and B1S2 (Result of Real-Vehicle Check) 
Condition
Exhaust Temperature B1S1
Exhaust Temperature B1S2
Idling with warmed engine
109°C (228°F)
106°C (223°F)
3010 rpm without load
154°C (309°F)
136°C (277°F)
4508 rpm without load
204°C (399°F)
184°C (363°F)


NG
Go to step 9
OK


4.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE EGR STEP POSITION)

  1. Remove the electric EGR valve assembly (Click here).

  1. Connect the electric EGR valve assembly connector.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Actual EGR Valve Pos.

  1. When changing the Active Test value from 0 to 100%, check that Actual EGR Valve Pos. smoothly changes to the set opening angle.

    OK:
    Value smoothly changes to the set opening angle.



  1. Check that the EGR valve is fully closed.

    OK:
    The EGR valve fully closes.


    A200348E01

    NOTICE:
    When cleaning the electric EGR control valve, use a piece of cloth. Spraying the solvent directly onto these parts or soaking the parts in the solvent may damage the parts.

    HINT:
    1. Hold the EGR valve to a light and confirm that the valve contacts with the valve seat securely.
    2. If light leaks out from the valve, the EGR valve is not fully closed.
    3. If the EGR valve cannot close fully, hesitation or poor acceleration almost certainly has occurred while driving the vehicle.
    4. Even if the EGR valve is closed completely, light leaks from the closed gap of valve seat (A part) as shown in the illustration, but this is normal.



OK
Go to step 6

NG
Go to step 5

5.REPLACE ELECTRIC EGR CONTROL VALVE ASSEMBLY

  1. Replace the electric EGR valve assembly (Click here).

  1. Turn the ignition switch to ON.

  1. Turn the ignition switch off and wait for 30 seconds or more.


NEXT


6.REMOVE DEPOSIT (CLEAN EGR PASSAGE)

  1. Remove the electric EGR valve assembly, diesel throttle body assembly, intake air connector and EGR pipe connector.

  1. Remove the deposits from those parts and clean them.

    NOTICE:
    1. When cleaning the EGR valve and the diesel throttle body, use a piece of cloth. Spraying the solvent directly onto these parts or soaking the parts in the solvent may damage the parts.
    2. Extreme care must be taken to prevent the removed deposits from falling into the engine unit during cleaning.

    HINT:
    1. Remove the intake manifold from the cylinder head when it has to be cleaned.
    2. Do not leave any deposits in the EGR valve assembly when cleaning the valve.

  1. Reinstall the electric EGR valve assembly, diesel throttle body assembly, intake air connector and EGR pipe connector.


NEXT


7.READ VALUE USING INTELLIGENT TESTER (INJECTION FEEDBACK VAL #1 TO #4 AND INJECTION VOLUME)

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

  1. Allow the engine to idle for 30 seconds or more.

    HINT:
    The shift lever should be in N and the A/C switch and all accessory switches should be off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Injection Feedback Val. #1 to #4 and Injection Volume.

  1. Read the values.

    HINT:
    When reading the values of Data List, confirm that PM regeneration is not activating (value of "After Injection Period" is 0) by entering the following menus: Powertrain / Engine and ECT / Data List / After Injection Period.
    If PM regeneration is activating (value of "After Injection Period" is not 0), drive the vehicle until the PM regeneration is complete (value of "After Injection Period" becomes 0).


    Standard:

    Tester Display
    		Engine Condition
    		Specified Condition
    Injection Volume
    		Idling
    		Less than 8 mm3/st
    Injection Feedback Val. #1
    Injection Feedback Val. #2
    Injection Feedback Val. #3
    Injection Feedback Val. #4
    		Idling
    		Between -2.0 mm3/st and 2.0 mm3

    HINT:
    1. Cylinders that have a compensation value which is more than the value specified above are considered to be faulty. Use the following steps to inspect and repair the cylinder.
    2. If the value of Injection Volume is 8 mm3/st or more and the value of all of the Injector Feedback Val. #1 to #4 is within the threshold, replace the fuel injectors for all cylinders.
      In this case, there is a possibility that too much recirculated exhaust gas enters into the engine. Therefore, you should compare the Target EGR Position with the Actual EGR Valve Pos. by entering the following menus using the intelligent tester: Powertrain / Engine and ECT / Data List / Target EGR Position and Actual EGR Valve Pos.
      If the difference between Target EGR Position and Actual EGR Valve Pos. exceeds +/-10%, the EGR system may have a malfunction.



OK
Go to step 16

NG
Go to step 10

8.REPAIR OR REPLACE HARNESS OR CONNECTOR


NEXT
Go to step 16

9.REPLACE EXHAUST GAS TEMPERATURE SENSOR

  1. Replace the malfunctioning exhaust gas temperature sensor B1S1 or B1S2 (Click here).



NEXT
Go to step 16

10.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (INJECTION CUT FOR IDENTIFYING MALFUNCTIONING CYLINDER)

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

  1. Connect the intelligent tester to the DLC3.

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Cylinder#1 to #4 Fuel Cut.

  1. Check the four cylinders in sequence to identify a faulty cylinder.

    HINT:
    1. DTCs may be output after this Active Test. Make sure to check for DTCs after this Active Test. If any DTCs are output, make sure to clear them (Click here).
    2. If the engine idling condition does not change despite cutting off the fuel injection, the cylinder is malfunctioning.


NEXT


11.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (INJECTION CUT FOR IDENTIFYING MALFUNCTIONING PART)

  1. Change the fuel injector of the malfunctioning cylinder to a fuel injector of the cylinder that functions normally.

  1. Start the engine and drive the vehicle until the engine coolant temperature reaches 75°C (167°F) or more.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Cylinder#1 to #4 Fuel Cut.

  1. Check the four cylinders in sequence to identify a faulty cylinder.

    HINT:
    1. DTCs may be output after this Active Test. Make sure to check for DTCs after this Active Test. If any DTCs are output, make sure to clear them (Click here).
    2. If the engine idling condition does not change despite cutting off the fuel injection, the cylinder is malfunctioning.

  1. Confirm the malfunctioning cylinder.
    Result 
    Result
    		Proceed to
    Different cylinder malfunction identified
    		A
    Same cylinder malfunction identified
    		B



B
Go to step 15
A


12.REPLACE FUEL INJECTOR ASSEMBLY

  1. Replace the fuel injector of the malfunctioning cylinder (Click here).


NEXT


13.PERFORM REGISTRATION AND INITIALIZATION

  1. Perform registration and initialization (Click here).


NEXT


14.BLEED AIR FROM FUEL SYSTEM

  1. Bleed air from fuel system (Click here).



NEXT
Go to step 16

15.CHECK ENGINE ASSEMBLY

  1. Check the engine assembly to determine the cause of low compression and other factors that would cause the exhaust gas temperature to rise insufficiently.

    HINT:
    The speed of each cylinder can be measured (compression test) by using the intelligent tester.

    In the compression test, need to disconnect the injector connectors of all cylinders, and crank the engine for approximately 10 seconds. At this time, the speed of each cylinder is measured. If the speed of one cylinder is higher than the other cylinders, the compression pressure of that cylinder is determined to be lower than the other cylinders.
    1. Warm up the engine.
    2. Turn the ignition switch off and disconnect the injector connectors of all cylinders.
    3. Connect the intelligent tester to the DLC3.
    4. Turn the ignition switch to ON and turn the tester on.
    5. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed of Cyl #1, Engine Speed of Cyl #2, Engine Speed of Cyl #3, Engine Speed of Cyl #4 and Av Engine Speed of All Cyl.
    6. Crank the engine for about 10 seconds.

      NOTICE:
      1. Do not crank the engine for more than 20 seconds.
      2. Use a fully-charged battery.

    7. Read the engine speed (Engine Speed of Cyl #1 to #4, Av Engine Speed of All Cyl) displayed on the tester when the ignition switch is ON.

      HINT:
      Do not turn the ignition switch off when finish the cranking.

    8. Reconnect the injector connectors of all cylinders.
    9. Clear the DTCs.


NEXT


16.CHECK WHETHER DTC OUTPUT RECURS (DTC P2080 OR P2084)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Clear the DTCs (Click here).

  1. Start the engine.

  1. Allow the engine to idle for 7 minutes or more.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.
    Result 
    Result
    		Proceed to
    DTC P2080 or P2084
    		A
    No DTC output
    		B



B
END
A


17.REPLACE ECM

  1. Replace the ECM (Click here).


NEXT


18.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Clear the DTCs (Click here).

  1. Start the engine.

  1. Allow the engine to idle for 7 minutes or more.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Confirm that the DTC is not output again.


NEXT

END