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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (1 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park) >> DTC C1203: ECM Communication Circuit Malfunction [10/2020 - 10/2023] >> Monitor Strategy

Monitor Strategy

Related DTCs C124A: CAN communication identification signal
Required Sensors/Components (Main) Skid control ECU assembly
Required Sensors/Components (Related) Skid control ECU assembly
Speed sensor
Frequency of Operation Continuous
Duration -
MIL Operation Immediately
Sequence of Operation None