DTC P0872: Transmission Fluid Pressure Sensor / Switch "C" Circuit Low [11/2021 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.

The oil pressure switch, which is built into the valve body, detects the fluid pressure of the SL1 fluid pressure circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0872	Transmission Fluid Pressure Sensor / Switch "C" Circuit Low	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and the vehicle is driven with shift lever in D (no malfunctions are detected in shift solenoid valve SL1, 2, 3, 4 and 5, SR, transmission revolution sensors (NT, NC3, SP2), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2) When the actual gear is 1st to 5th gear, the oil pressure switch is OFF Malfunction status occurs 2 times (1 trip) 2-trip detection logic	Oil pressure switch Transmission wire Harness and connector TCM	Comes on	DTC stored