Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001BGW7
Model Year Start: 2019 Model: Corolla Hatchback Prod Date Range: [06/2018 - 03/2019]
Title: M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P01052A; Manifold Absolute Pressure / Barometric Pressure Sensor Signal Stuck in Range; 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 03/2019]

DTC

P01052A

Manifold Absolute Pressure / Barometric Pressure Sensor Signal Stuck in Range

DESCRIPTION

Refer to DTC P010511.

Click here 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P010511; Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Ground+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P01052A

Manifold Absolute Pressure / Barometric Pressure Sensor Signal Stuck in Range

Intake manifold pressure measured after engine start drops by less than 2 kPa [0.3 psi] compared to the intake manifold pressure (atmospheric pressure) measured before engine start (2 trip detection logic).
  • Intake system
  • Manifold absolute pressure sensor

Comes on

DTC stored

SAE Code: P0106

MONITOR DESCRIPTION

When the intake manifold pressure measured after engine start drops by less than 2 kPa [0.3 psi] compared to the intake manifold pressure (atmospheric pressure) measured before engine start, the ECM interprets this as a malfunction of the manifold absolute pressure sensor and stores DTC P01052A.

MONITOR STRATEGY

Related DTCs

P0106: Manifold absolute pressure sensor stuck monitoring

Required Sensors/Components (Main)

Manifold absolute pressure sensor

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

6 seconds

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

P0010, P1360, P1362, P1364, P1366, P2614 (Motor drive VVT system control module)

P0011 (VVT system - advance)

P0012 (VVT system - retard)

P0014 (Exhaust VVT system - advance)

P0015 (Exhaust VVT system - retard)

P0016 (VVT system - misalignment)

P0017 (Exhaust VVT system - misalignment)

P0107, P0108 (Manifold absolute pressure)

P0112, P0113 (Intake air temperature sensor)

P0117, P0118 (Engine coolant temperature sensor)

P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor)

P0125 (Insufficient coolant temperature for closed loop fuel control)

P0335, P0337, P0338 (Crankshaft position sensor)

P0340, P0342, P0343 (Camshaft position sensor)

P0365, P0367, P0368 (Exhaust camshaft position sensor)

P0400 (EGR system)

P0401 (EGR system (closed))

P0489, P0490 (EGR control circuit)

P106A (Evaporative emission control system pressure sensor - manifold pressure sensor correlation)

Battery voltage

10.5 V or higher

Engine coolant temperature

30°C (86°F) or higher

Intake air temperature

-10°C (14°F) or higher

Engine speed

500 rpm or higher

Throttle valve

Close

EGR valve

Close

Atmospheric pressure

76 kPa(abs) [11 psi(abs)] or higher

TYPICAL MALFUNCTION THRESHOLDS

Difference between intake manifold absolute pressure and atmospheric pressure

Higher than -2 kPa [-0.3 psi]

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the engine switch off and wait for at least 30 seconds.
  6. Turn the engine switch on (IG).
  7. Turn the Techstream on.
  8. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher [A].
  9. Idle the engine for 10 seconds or more [B].
  10. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  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 / Utility / All Readiness.
  13. Input the DTC: P01052A.
  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

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.
    • If the judgment result is INCOMPLETE, perform steps [B] through [C] again.
    • [A] to [C]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

CAUTION / NOTICE / HINT

HINT:

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 P01052A)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

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

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTC P01052A is output

A

DTC P01052A and other DTCs are output

B

HINT:

If any DTCs other than P01052A are output, troubleshoot those DTCs first.

B

GO TO DTC CHART 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

2.

READ VALUE USING TECHSTREAM (INTAKE MANIFOLD ABSOLUTE PRESSURE)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Data List / Intake Manifold Absolute Pressure.

Powertrain > Engine > Data List

Tester Display

Intake Manifold Absolute Pressure

(e) According to the display on the Techstream, read the Data List.

(f) Start the engine.

(g) According to the display on the Techstream, read the Data List.

Standard:

Engine Condition

Intake Manifold Absolute Pressure

Engine switch on (IG)

80 to 110 kPa (11.6 to 15.95 psi)

Idling

18 to 38 kPa (2.6 to 5.5 psi)
OK

CHECK FOR INTERMITTENT PROBLEMS

NG

3.

CHECK INTAKE SYSTEM

(a) Check the intake system for vacuum leaks.

Click here 2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION+

OK:

No leaks from intake system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the intake system.

Click here 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 09/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

OK

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

NG

REPAIR OR REPLACE INTAKE SYSTEM