Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001HT5B
Model Year Start: 2020 Model: Corolla Prod Date Range: [03/2019 - 11/2022]
Title: 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: P106A; Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation; 2020 - 2023 MY Corolla [03/2019 - 11/2022]

DTC

P106A

Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation

DESCRIPTION

This DTC is designed to detect a deviation in the output characteristics of a pressure sensor.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P106A

Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation

The difference between the pressure of the canister pressure sensor (Vapor Pressure Pump*) and manifold absolute pressure sensor (MAP*) is higher than 7.22 kPa (1.04 psi) (2 trip detection logic).

*: Data List name
  • Canister pressure sensor (canister pump module)
  • Manifold absolute pressure sensor

Comes on

DTC stored

DTC for Mexico Models

- Does not apply

MONITOR DESCRIPTION

The pressure of the canister pressure sensor and manifold absolute pressure sensor is monitored 50 minutes after the ignition switch is turned off. If there is a difference in the pressures, the ECM illuminates the MIL and stores this DTC.

HINT:

Correct judgment may not be possible when the altitude is 4000 m (13120 ft.) or more.

MONITOR STRATEGY

Related DTCs

P106A: Absolute pressure sensor rationality

Required Sensors/Components (Main)

Canister pressure sensor

Manifold absolute pressure sensor

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

Within 65 seconds

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

P0106, P0107, P0108 (Manifold absolute pressure)

P0452, P0453 (Evaporative emission system pressure sensor)

Time elapsed at after engine stop

50 minutes

Time after ECM started by soak-timer

60 seconds or more

Ignition switch

Off

Battery voltage

8 V or higher

Intake air temperature

-10°C (14°F) or higher

Engine coolant temperature

-10°C (14°F) or higher

TYPICAL MALFUNCTION THRESHOLDS

Difference between EVAP pressure and manifold absolute pressure

Higher than 7.22 kPa [1.04 psi]

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) [A].
  5. Start the engine and idle for 10 seconds [B].
  6. Turn the ignition switch off and wait for at least 30 seconds.
  7. Leave the ignition switch off for 55 minutes [C].
  8. Turn the ignition switch to ON.
  9. Turn the Techstream on.
  10. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
  11. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  12. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  13. Input the DTC: P106A.
  14. Check the DTC judgment result.

    Techstream Display

    Description

    NORMAL
    • DTC judgment completed
    • System normal

    ABNORMAL
    • DTC judgment completed
    • System abnormal

    INCOMPLETE
    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    N/A
    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or N/A, perform steps [B] through [D].
  15. If no pending DTC is output, perform a universal trip and check for permanent DTCs.

    Click here 2020 - 2022 MY Corolla [03/2019 - 09/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR 2023 MY Corolla [09/2022 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

    HINT:

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.

CAUTION / NOTICE / HINT

HINT:

  • Refer to "Data List / Active Test" [Vapor Pressure Pump and MAP].

    Click here 2020 MY Corolla [03/2019 - 04/2020]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DATA LIST / ACTIVE TEST 2021 - 2023 MY Corolla [04/2020 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DATA LIST / ACTIVE TEST

  • Read Freeze Frame Data using the Techstream. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P106A)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes

Result

Proceed to

DTC P106A is output

A

DTC P106A and other DTCs are output

B

HINT:

If any DTCs other than P106A are output, troubleshoot those DTCs first.

B

GO TO DTC CHART 2020 MY Corolla [03/2019 - 04/2020]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2021 - 2022 MY Corolla [04/2020 - 09/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2023 MY Corolla [09/2022 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

2.

READ VALUE USING TECHSTREAM (VAPOR PRESSURE PUMP AND MAP)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List / Vapor Pressure Pump and MAP.

Powertrain > Engine and ECT > Data List

Tester Display

MAP

Vapor Pressure Pump

(e) Compare the Vapor Pressure Pump and MAP data from the Data List with the current atmospheric pressure*.

HINT:

  • *: Standard atmospheric pressure is 101 kPa(abs) (14 psi(abs)) at sea level. The atmospheric pressure decreases by approximately 1 kPa (0.14 psi) for every 100 m of elevation increase. Atmospheric pressure is also affected by weather conditions.
  • If you do not know the atmospheric pressure, refer to the Vapor Pressure Pump value of other vehicles in the workshop and check the difference in pressure.

Result

Proceed to

If the Vapor Pressure Pump value differs from the atmospheric pressure by 3.5 kPa (0.51 psi) or more

A

If the MAP value differs from the atmospheric pressure by 3.5 kPa (0.51 psi) or more

B
B

GO TO STEP 4

A

3.

REPLACE CANISTER PUMP MODULE

(a) Replace the canister pump module.

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (EMISSION CONTROL): CANISTER (w/ Canister Pump Module): REMOVAL

NEXT

GO TO STEP 5

4.

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

(a) Replace the manifold absolute pressure sensor.

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (EMISSION CONTROL): VACUUM SENSOR: REMOVAL

NEXT

5.

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List / MAP and Vapor Pressure Pump.

Powertrain > Engine and ECT > Data List

Tester Display

MAP

Vapor Pressure Pump

(e) Confirm that the difference between Vapor Pressure Pump and MAP is 3.5 kPa (0.51 psi) or less.

NEXT

END