DTC C1020-14: Ignition Switch On/Start Position Circuit Short to Ground or Open [11/2021 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P2530-14.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Note
C1020-14	Ignition Switch On/Start Position Circuit Short to Ground or Open	When the IG1 terminal voltage is less than 3 V, the IG2 terminal voltage is 9.5 V or more for 4 seconds or more.	Open or short in IG1 circuit Improperly connected connector, deformation or corrosion of terminals No. 2 skid control ECU (brake actuator assembly)	Comes on	Brake/EPB	SAE Code: C1021 (Case 1) Output ECU: No. 2 skid control ECU (brake actuator assembly)