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Home >> Lexus >> 2025 >> NX 250 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Electronically Controlled Brake System - Diagnostic Codes (6 Of 6), Symptom Tests & Circuit Tests) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HEV Model) >> DTC U0110-00: Lost Communication with Drive Motor Control Module "A"; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module; DTC U1106-00: Lost Communication with Electric Parking Brake Module; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message; DTC U1492-57: Software incompatibility with Hybrid/EV Powertrain Control Module Invalid/Incompatible Software Component [11/2021 - ] >> Component Operating Range

Component Operating Range

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U0110 (CASE 2)

Communication status with inverter with converter assembly (PL-Bus) Valid
U0129

All of the following conditions are met -
VM1 voltage Higher than 7.3 V, and less than 23.2 V
IGR voltage Higher than 9.5 V
Communication status with ECB* (C1-bus) Valid

*: Electronically Controlled Brake System

U0293 (CASE 2)

Both of the following conditions are met -
Communication status with hybrid vehicle control ECU (C1-Bus) send at IGP power on Valid
Communication status with hybrid vehicle control ECU (C1-Bus) send at IGR power on Valid
U1150 (CASE 2)

Both of the following conditions are met -
Communication status with hybrid vehicle control ECU (PL-Bus) send at IGP power on Valid
Communication status with hybrid vehicle control ECU (PL-Bus) send at IGR power on Valid
U117D

All of the following conditions are met -
VM1 voltage Higher than 7.3 V, and less than 23.2 V
IGR voltage Higher than 9.5 V
Communication status with ECB* (PL-bus) Valid

*: Electronically Controlled Brake System

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