DTC P1610-09: Control Module Processor (Brake Override System Input Signal) Component Failure [10/2022 - 10/2024]: 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.

The ECM monitors for malfunction displays during brake override system input information (stop light switch assembly, speed sensor) malfunctions.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P1610-09	Control Module Processor (Brake Override System Input Signal) Component Failure	Any of the following conditions are met (1 trip detection logic). Malfunction in ECM internal RAM for stop light switch assembly When a malfunction in the ECM internal RAM for the speed sensor causes the slowest speed value among the 4 wheels to be 7 km/h (4.3 mph) or less and the second slowest speed value among the 4 wheels to be 40 km/h (24.9 mph) or higher for 30 seconds	ECM	Does not come on	Engine	A	SAE Code: P1610 DTC for Mexico Models: Applies