Section 35 (Engine Control System - Diagnostic Codes (U1103-U115C) & Circuit Tests)
WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.
- SFI System
- DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [03/2023 - ]
- DTC U115C-87: Lost Communication with ECM/PCM "A" (ch5) Missing Message [11/2021 - 03/2022]
- DTC U115C-87: Lost Communication with ECM/PCM "A" (ch5) Missing Message [03/2022 - ]
- Active Control Engine Mount System [11/2021 - 03/2023]
- Active Control Engine Mount System [03/2023 - ]
- EVAP System [11/2021 - 03/2023]
- EVAP System [03/2023 - ]
- ECM Power Source Circuit [11/2021 - ]
- VC Output Circuit [11/2021 - 03/2023]
- VC Output Circuit [03/2023 - ]
- Fuel Pump Control Circuit [11/2021 - 03/2022]
- Fuel Pump Control Circuit [03/2022 - ]
- Starter Signal Circuit [11/2021 - ]
- Brake Override System [11/2021 - ]
- MIL Circuit [11/2021 - 03/2022]
- MIL Circuit [03/2022 - 03/2024]
- MIL Circuit [03/2024 - ]
- Ignition Circuit [11/2021 - 03/2023]
- Ignition Circuit [03/2023 - ]