DTC    P2453    Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance

for Preparation Click here


DESCRIPTION

Refer to DTC P2454 (Click here).

HINT:
If the exhaust pipe air hoses of the differential pressure sensor are incorrectly connected (crossed), the ECM interprets this as abnormal pressure difference, DTC P2453 will be stored and the MIL will be illuminated.


P2453 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch from ON to off after driving vehicle
All of the following conditions are met:
  1. The differential pressure indicates -2.4 kPa or less
  2. Turn the ignition switch off and wait for 30 seconds or more
(1 trip detection logic)
  1. Incorrect arrangement exhaust pipe air hose routing
  2. Vacuum transmitting hose is clogged is clogged
  3. Blockage in transmitting pipe
  4. Differential pressure sensor
  5. Exhaust manifold converter sub-assembly (DPF catalytic converter)
  6. ECM

DTC No.
Data List
P2453
DPF Differential Pressure

HINT:
DTC P2454 (Differential pressure sensor circuit low) and/or DTC P2455 (Differential pressure sensor high) will be present if there is an open or short in the differential pressure sensor circuit.


INSPECTION PROCEDURE

NOTICE:
When replacing the ECM and/or DPF catalyst, 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.
  3. Check the DPF Differential Pressure using the intelligent tester by entering the following menus: Powertrain / Engine and ECT / Data List / DPF Differential Pressure. For reference, results of real-vehicle check is as shown in the table below:
    DPF Differential Pressure (Result of Real-Vehicle Check) 
    Condition
    		DPF Differential Pressure
    Idling (warm up the engine)
    		0.496 kPa
    Running without load (2500 rpm)
    		0.898 kPa
    Running without load (4500 rpm)
    		2.597 kPa
    Driving in 3rd gear 60 km/h (37 mph)
    		1.40 kPa
    Driving in 3rd gear 60 km/h (37 mph) during PM regeneration
    		3.30 kPa
    Driving with the accelerator fully open at 2000 rpm
    		2.097 kPa
    Driving with the accelerator fully open at 3000 rpm
    		3.097 kPa
    Driving with the accelerator fully open at 4500 rpm
    		3.097 kPa

1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2453)

  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 the DTCs.
    Result 
    Result
    		Proceed to
    P2453 and "P2454 or P2455"
    		A
    Except above
    		B

    HINT:
    If the DTC P2453 and "P2454 or P2455" are output, perform troubleshooting for DTC P2454 and P2455 first.



B
Go to step 2
A

GO TO DTC CHART (Click here)  

2.CHECK CONNECTION OF EXHAUST PIPE AIR HOSE (DIFFERENTIAL PRESSURE SENSOR - TRANSMITTING PIPE)


  1. Check if exhaust pipe air hose routing between the differential pressure sensor and the vacuum transmitting pipe is correct.


    A200355E01

  1. Check that there is no exhaust gas leak between the differential pressure sensor and the vacuum transmitting pipe.



NG
Go to step 6
OK


3.CHECK BLOCKAGE OF EXHAUST PIPE AIR HOSE AND TRANSMITTING PIPE

CAUTION:
Be careful of being burned by exhaust gases during the following inspection.

  1. Disconnect the exhaust pipe air hose (both upstream and downstream) on the differential pressure sensor.

  1. Start the engine.

  1. Check if there are exhaust gas pulsations from both exhaust pipe air hoses during idling.

    OK:
    There is no blockage.



NG
Go to step 7
OK


4.INSPECT DIFFERENTIAL PRESSURE SENSOR ASSEMBLY

  1. Inspect the differential pressure sensor (Click here).

    Standard:
    Approximately the same pressure as the applied pressure is indicated.

    HINT:
    The DPF Differential Pressure display is a value that does not reflect the zero point adjustment. Therefore the displayed may vary about +/-0.3 kPa even if the applied differential pressure is 0 kPa.



NG
Go to step 8
OK


5.PERFORM DIFFERENTIAL PRESSURE SENSOR LEARNING

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

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

  1. Repeat the above procedures (A) and (B) 3 times.

    HINT:
    Procedures (A) and (B) must be repeated 3 times to complete the differential pressure sensor learning process.



NEXT
Go to step 11

6.CORRECT TO NORMAL CONNECTION


NEXT
Go to step 11

7.REPLACE CLOGGED PARTS


NEXT
Go to step 11

8.REPLACE DIFFERENTIAL PRESSURE SENSOR ASSEMBLY

  1. Replace the differential pressure sensor assembly (Click here).

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

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

  1. Repeat the above procedures (A) and (B) 3 times.

    HINT:
    Procedures (A) and (B) must be repeated 3 times to complete the differential pressure sensor learning process.


NEXT


9.INSPECT DIFFERENTIAL PRESSURE SENSOR ASSEMBLY

  1. Inspect the differential pressure sensor (Click here).

    Standard:
    Approximately the same pressure as the applied pressure is indicated.

    HINT:
    The DPF Differential Pressure display is a value that does not reflect the zero point adjustment. Therefore the displayed may vary about +/-0.3 kPa even if the applied differential pressure is 0 kPa.



OK
Go to step 11

NG
Go to step 10

10.REPLACE ECM

  1. Replace the ECM (Click here).


NEXT


11.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. Turn the ignition switch off and wait for 30 seconds.

  1. Start the engine and drive the vehicle with a engine speed of 3000 rpm or more (shift position: 3rd) for 10 minutes or more.

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

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

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

  1. Confirm that the DTC is not output again.


NEXT

END