DTC P0110-15: Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open [10/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0110-11.

Refer to DESCRIPTION

HINT:

When DTC P0110-15 is stored, the ECM enters fail-safe mode. During fail-safe mode, the intake air temperature is estimated to be 20°C (68°F) by the ECM. Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P0110-15	Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open	The intake air temperature sensor output voltage is higher than 4.91 V for 0.5 seconds or more (1 trip detection logic).	Open or short in intake air temperature sensor circuit Intake air temperature sensor (mass air flow meter sub-assembly) ECM	Comes on	Engine	A	SAE Code: P0113 DTC for Mexico Models: Applies

HINT:

When this DTC is output, check the intake air temperature in the Data List. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.

DTC No.	Intake Air Temperature	Malfunction
P0110-15	-40°C (-40°F)	Short to +B in THA circuit Open in THA circuit Open in E2G circuit

If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2022 - ]