SFI SYSTEM, Diagnostic DTC:P13AA and P2073

DTC Code DTC Name
P13AA Inconsistency of the Intake Pressure at Full Load (No Patmo Sensor)
P2073 Manifold Absolute Pressure / Mass Air Flow - Throttle Position Correlation at Idle

DESCRIPTION

Refer to DTC P0106.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P13AA

Inconsistency of the Intake Pressure at Full Load (No Patmo Sensor)

Intake air pressure is abnormal when driving with engine under high load.

  • Air pressure sensor assembly

  • Intake system

  • Wire harness or connector

  • ECM

Comes on

DTC stored

P2073

Manifold Absolute Pressure / Mass Air Flow - Throttle Position Correlation at Idle

Although throttle valve angle is sufficient, intake air pressure is higher or lower than threshold.

  • Air pressure sensor assembly

  • Throttle body with motor assembly

  • Intake system

  • Emission control system

  • Wire harness or connector

  • ECM

Comes on

DTC stored

WIRING DIAGRAM

  • Refer to DTC P0107 for the air pressure sensor circuit.

    Click here

  • Refer to DTC P0121 for the throttle body with motor assembly circuit.

    Click here

PROCEDURE

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P13AA OR P2073)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Check for DTCs.

      Powertrain > Engine > Trouble Codes

      Result

      Result

      Proceed to

      DTC P13AA or P2073 is output

      A

      DTC P13AA or P2073 and other DTCs are output

      B
      Tip:

      If DTC P1181 and/or P2073 and P0121, P0123, P2123, P2122, P0122, P2107 or P0638 are output simultaneously, troubleshoot for DTC P0121, P0123, P2123, P2122, P0122, P2107 or P0638 first.

    B

    GO TO DTC CHART

    Click here

    A

  2. READ VALUE USING GTS (MEASURING OF THE INLET PRESSURE)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Measuring of the Inlet Pressure.

      Powertrain > Engine > Data List

      Tester Display

      Measuring of the Inlet Pressure

    5. Read the value.

      OK

      Same value as the actual atmospheric pressure.

      Tip:

      • Standard atmospheric pressure is 101 kPa(abs) [758 mmHg(abs)]. For every 100 m (328 ft.) increase in altitude, atmospheric pressure drops by approximately 1 kPa (7.5 mmHg). The pressure also varies due to the weather (high atmospheric pressure, low atmospheric pressure).

      • Check "Atmospheric Pressure" in the Data List.

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)Click here

    OK

  3. CHECK INTAKE SYSTEM

    1. Check the intake system for vacuum leaks.

      Click here

      OK

      No leaks in intake system.

      Tip:

      Visually check that the air filter is normal.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE INTAKE SYSTEM

    OK

  4. CHECK EMISSION CONTROL SYSTEM

    1. Check the emission control system.

      Click here

      Tip:

      Check the purge VSV system for air leaks.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE EMISSION CONTROL SYSTEM

    OK

  5. CHECK LUBRICATION SYSTEM

    1. Check and ensure the following:

      1. The oil filler cap is not loose or damaged and is airtight.

      2. The engine oil level dipstick guide joint and seal gasket are tightly sealed.

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    NG

    REPAIR OR REPLACE LUBRICATION SYSTEM

  6. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)

    1. Disconnect the throttle body with motor assembly connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B54-4 (VCTA) - B55-34 (VCTA)

      Always

      Below 1 Ω

      B54-5 (VTA) - B55-10 (VTA)

      Always

      Below 1 Ω

      B54-6 (VTA2) - B55-11 (VTA2)

      Always

      Below 1 Ω

      B54-3 (ETA) - B55-22 (ETA)

      Always

      Below 1 Ω

      B54-4 (VCTA) or B55-34 (VCTA) - Body ground and other terminals

      Always

      10 kΩ or higher

      B54-5 (VTA) or B55-10 (VTA) - Body ground and other terminals

      Always

      10 kΩ or higher

      B54-6 (VTA2) or B55-11 (VTA2) - Body ground and other terminals

      Always

      10 kΩ or higher

      B54-3 (ETA) or B55-22 (ETA) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (AIR PRESSURE SENSOR ASSEMBLY - ECM)

    1. Disconnect the air pressure sensor assembly connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B36-1 (PIM) - B55-13 (PIM)

      Always

      Below 1 Ω

      B36-2 (VC) - B55-25 (VCPM)

      Always

      Below 1 Ω

      B36-4 (E2) - B55-24 (E2)

      Always

      Below 1 Ω

      B36-1 (PIM) or B55-13 (PIM) - Body ground and other terminals

      Always

      10 kΩ or higher

      B36-2 (VC) or B55-25 (VCPM) - Body ground and other terminals

      Always

      10 kΩ or higher

      B36-4 (E2) or B55-24 (E2) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. REPLACE AIR PRESSURE SENSOR ASSEMBLY

    1. Replace the air pressure sensor assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  9. CHECK WHETHER DTC OUTPUT RECURS (DTC P13AA OR P2073)

    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 a few minutes.

    6. Perform the drive test.

    7. Turn the GTS on.

    8. Enter the following menus: Powertrain / Engine / Trouble Codes.

    9. Check for DTCs.

      Powertrain > Engine > Trouble Codes

    Result

    Result

    Proceed to

    DTC P13AA or P2073 is output

    A

    DTCs are not output

    B
    A

    REPLACE ECM

    Click here

    B

    END