SFI SYSTEM, Diagnostic DTC:P106A

DTC Code DTC Name
P106A Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation

DESCRIPTION

DTC No. DTC Detection Condition Trouble Area
P106A The difference between the pressure of the canister pressure sensor (Vapor Pressure Pump*) and manifold absolute pressure sensor (MAP*) is higher than 8.7 kPa(gauge) [65.259 mmHg(gauge)] (2 trip detection logic).

  • Canister pressure sensor (canister pump module)

  • Manifold absolute pressure sensor

Tech Tips

*: Data List name

MONITOR DESCRIPTION

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

The pressure of the canister pressure sensor and manifold absolute pressure sensor is monitored 50 minutes after the power switch is turned off. If there is a difference in the pressures, the MIL is illuminated (2 trip detection logic).

Tech Tips

Correct judgment may not be possible when the altitude is 4000 m (13124 ft) or higher.

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 Once per driving cycle
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)

P0401 (EGR system (closed))

P0452, P0453 (Evaporative emission system pressure sensor)
Time elapsed after engine stop 50 minutes
Time after ECM started by soak-timer 60 seconds or more
Auxiliary battery voltage 10.5 V or higher
Intake air temperature -10°C (14°F) or higher
Engine coolant temperature sensor -10°C (14°F) or higher

TYPICAL MALFUNCTION THRESHOLDS

Difference between EVAP pressure and manifold absolute pressure Higher than 8.7 kPa(gauge) [65.259 mmHg(gauge)]

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.

  2. Turn the power switch on (IG) and turn the Techstream on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Put the engine in inspection mode (maintenance mode) Click here [A].

  5. Start the engine and Idle for 10 seconds.

  6. Turn the power switch off.

  7. Leave the power switch off for 55 minutes [B].

  8. Turn the power switch on (IG) and turn the Techstream on.

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

  10. Read the pending DTCs.

    Tech Tips

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

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

  12. Input the DTC: P106A.

  13. 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

    Tech Tips

    • 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 [A] through [C] again.

  14. If no pending DTC is output, perform a universal trip and check for permanent DTCs Click here.

    Tech Tips

    • If a permanent DTC is output, the system is malfunctioning.

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

INSPECTION PROCEDURE

Tech Tips

  • 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.

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

PROCEDURE

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

    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

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

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P106A is output A
      DTC P106A and other DTCs are output B

      Tech Tips

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

    B

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING TECHSTREAM (VAPOR PRESSURE PUMP AND MAP)

    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Vapor Pressure Pump and MAP.

    5. Compare the Vapor Pressure Pump and MAP data from the Data List with day's atmospheric pressure*.

      Tech Tips

      • *: Standard atmospheric pressure is 101 kPa(abs) [760 mmHg(abs)]. For every 100 m (328 ft) increase in altitude, pressure drops by 1 kPa (7.5 mmHg). The pressure also varies due to the weather (high atmospheric pressure, low atmospheric pressure).

      • Also, check "Atmosphere Pressure" in the Data List.

      • 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
      Result Proceed to
      If the Vapor Pressure Pump value differs from the atmospheric pressure by 3.5 kPa(gauge) [26.254 mmHg(gauge)] or higher A
      If the MAP value differs from the atmospheric pressure by 3.5 kPa(gauge) [26.254 mmHg(gauge)] or higher B
    B

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR Click here

    A

  3. REPLACE CANISTER PUMP MODULE

    1. Replace the canister pump module Click here.

    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  4. REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    1. Replace the manifold absolute pressure sensor Click here.

    NEXT

  5. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG) and the Techstream on.

    3. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Vapor Pressure Pump and MAP.

    4. Confirm that the difference between Vapor Pressure Pump and MAP are 3.5 kPa(gauge) [26.25 mmHg(gauge)] or less.

    NEXT

    END