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Home >> Lexus >> 2025 >> RX 350h Premium >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (5 Of 9) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (except Gasoline 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 [10/2022 - ] >> Component Operating Range
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Component Operating Range

U0110 (CASE 2)

Both of the following conditions are met -
Communication reception with hybrid motor control inverter assembly "A" (CH2) Not delayed
No checksum error with hybrid motor control inverter assembly "A" (CH2) -
U0129

Both of the following conditions are met -
Communication reception with No. 2 skid control ECU (brake actuator assembly) (CH1) Not delayed
No checksum error with No. 2 skid control ECU (brake actuator assembly) (CH1) -
U0293

Both of the following conditions are met -
Communication reception with hybrid vehicle control ECU (CH1) Not delayed
No checksum error with hybrid vehicle control ECU (CH1) -
U1150

Both of the following conditions are met -
Communication reception with hybrid vehicle control ECU (CH2) Not delayed
No checksum error with hybrid vehicle control ECU (CH2) -
U117D

Both of the following conditions are met -
Communication reception with No. 2 skid control ECU (brake actuator assembly) (CH2) Not delayed
No checksum error with No. 2 skid control ECU (brake actuator assembly) (CH2) -