СИСТЕМА ECD (для DPF), Diagnostic DTC:P2195

DTC Code DTC Name
P2195 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)

DESCRIPTION

Refer to DTC P0031 Click here.

P2195
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
After the engine is fully warmed up, the accelerator pedal is released for 7 seconds or more immediately after the vehicle is accelerated to a speed of between 60 and 80 km/h (37 and 50 mph).

While fuel-cut operation performed (during vehicle deceleration), air fuel ratio sensor voltage is 2.65 V or more for 5 seconds.

(2 trip detection logic)

  • A/F sensor

  • ECM
Related Data List
DTC No. Data List
P2195

  • AFS Voltage B1S1

  • AF Sensor Leaning Value

MONITOR DESCRIPTION

When the air fuel ratio sensor output deviates to lean due to a malfunction in the sensor, white smoke occurs since the ECM performs control for a lean condition. The ECM monitors the current value of the sensor in the fuel cut to detect abnormal current. If the ECM detects an air fuel ratio sensor voltage of 2.65 V or more for a cumulative time of 5 seconds or more, the ECM judges that there is a malfunction in the air fuel ratio sensor and stores DTC P2195.

INSPECTION PROCEDURE

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

Tech Tips

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.

PROCEDURE


  1. REPLACE AIR FUEL RATIO SENSOR


    1. Replace the air fuel ratio sensor Click here.


    NEXT

  2. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Clear the DTCs Click here.

    5. Turn the engine switch off and wait for 30 seconds or more.

    6. Start the engine and warm it up.

    7. After the engine is fully warmed up, the accelerator pedal is released for 7 seconds or more immediately after the vehicle is accelerated to a speed of between 60 and 80 km/h (37 and 50 mph).

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    8. Turn the tester on.

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

    10. Confirm that the pending DTC is not output again.

      Tech Tips

      Perform the following procedure using the tester to determine whether or not the DTC judgment has been carried out.


      1. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

      2. Input DTC P2195.

      3. Check the DTC judgment result.

        Result
        Tester Display Result Proceed to
        Pending DTC DTC P2195 is output B
        All Readiness NORMAL A
        ABNORMAL B

        Tech Tips

        If STATUS is INCOMPLETE or UNKNOWN, the accelerator pedal is released for 7 seconds or more immediately after the vehicle is accelerated to a speed of between 60 and 80 km/h (37 and 50 mph) again.


    B

    REPLACE ECM Click here

    A

    END