DTC P2530-14: Ignition Switch Circuit Short to Ground 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.

If the engine stop and start ECU receives the OFF signal from the certification ECU (smart key ECU assembly) when communication with the ECM is normal, the engine stop and start ECU will output DTC P2530-14.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P2530-14	Ignition Switch Circuit Short to Ground or Open	All of the following conditions are met for 10 seconds or more (1 trip detection logic): Ignition switch off signal is input. Communication with the ECM is normal. Ignition switch (communication) to ON.	Wire harness or connector EFI MAIN NO. 1 relay IGP NO. 1 relay Certification ECU (Smart key ECU assembly) Engine stop and start ECU	Does not come on	Does not come on	Stop and Start	A	SAE Code: P2531