ECD SYSTEM(for 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).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2195

Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)

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)

  • Air fuel ratio sensor

  • ECM

Comes on

DTC stored
Table 1. 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.

CONFIRMATION DRIVING PATTERN

DTC No.

DTC Detection Drive Pattern

P2195

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 / NOTICE / HINT

Note:

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

PROCEDURE

  1. REPLACE AIR FUEL RATIO SENSOR

    1. Replace the air fuel ratio sensor.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  2. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine > Clear DTCs

    5. Turn the ignition 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 GTS on.

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

      Powertrain > Engine > Trouble Codes

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

      Tip:

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

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

        Powertrain > Engine > Utility

        Tester Display

        All Readiness

      2. Input DTC P2195.

      3. Check the DTC judgment result.

        Result

        GTS Display

        Result

        Proceed to

        Pending DTC

        DTC P2195 is output

        B

        All Readiness

        NORMAL

        A

        ABNORMAL

        B
        Tip:

        If STATUS is INCOMPLETE or N/A, 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.

    A

    END

    B

    REPLACE ECM

    Click here