DTC P0105-15: Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open [08/2021 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus ES 250, 2023 Lexus ES 250, 2022 Lexus ES 250, and 2021 Lexus ES 250. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR

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*a	Front view of wire harness connector (to Manifold Absolute Pressure Sensor)

HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

Disconnect the manifold absolute pressure sensor connector.
Turn the engine switch on (IG).

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

Standard Voltage

Tester Connection	Condition	Specified Condition
C59-3 (VC) - C59-1 (E2)	Engine switch on (IG)	4.75 to 5.25 V
C59-2 (PIM) - C59-1 (E2)	Engine switch on (IG)	1.2 to 5.25 V

Turn the engine switch off and wait for at least 30 seconds.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
C59-1 (E2) - Body ground	Engine switch off	Below 1 Ω
C59-3 (VC) - C59-2 (PIM)	Engine switch off	171 to 189 kΩ

Result

Proceed to
OK
NG

Result:

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR. Refer to REMOVAL [08/2020 - ]

Result:

See step 2

CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

Disconnect the manifold absolute pressure sensor connector.
Disconnect the ECM connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
C59-1 (E2) - C77-119 (EPIM)	Always	Below 1 Ω
C59-2 (PIM) - C77-120 (PIM)	Always	Below 1 Ω
C59-2 (PIM) or C77-120 (PIM) - Other terminals	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPLACE ECM. Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR