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Home >> Lexus >> 2025 >> NX 350 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Stop And Start System - Diagnostic Codes (2 Of 2) & Circuit Tests (1 Of 3) >> Stop And Start System >> DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0103-87: Lost Communication with Gear Shift Control Module "A" Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication With Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U115C-87: Lost Communication with ECM/PCM "A" (ch5) Missing Message; DTC U1170-87: Lost Communication With Brake System Control Module (ch2) Missing Message [03/2024 - ] >> Monitor Strategy
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Monitor Strategy

Related DTCs U0100: Lost communication with engine control module (starter / generator control module) verify communication
U0101: Lost Communication With TCM (Starter/Generator Control Module) Verify communication
U0103: Lost communication with gear shift control module (starter / generator control module) verify communication
U0129: Lost communication with brake system control module (starter / generator control module) verify communication
U115C: Lost communication with engine control module (starter / generator control module, chassis local bus) verify communication
Required Sensors/Components (Main) Engine stop and start ECU
Required Sensors/Components (Related) -
Frequency of Operation Continuous
Frequency of Operation 1 seconds: U0100, U0101
3 seconds: U0103
2.22 seconds: U0129
10.6 seconds: U115C
Duration 2 driving cycles: U0100, U0103, U0129
Immediate: U115C
Sequence of Operation None