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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (3 Of 3) & Symptom Tests >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park) >> DTC C1442: Invalid Data Received from Deceleration Sensor; DTC C1443: Invalid Data Received from Yaw Rate Sensor [10/2020 - 10/2023] >> Typical Enabling Conditions

Typical Enabling Conditions

Monitor runs whenever the following DTCs are not stored C051C (Case 2 and 3): Acceleration sensor range/performance
C051F: Acceleration sensor "A"/"B" correlation
C0520 (Case 1): Acceleration sensor internal malfunction
C1241 (Case 1 and 2): Brake system voltage circuit low
C1241 (Case 3 and 4): Speed sensor voltage circuit low
All of the following conditions are met -
Lost communication with yaw rate and acceleration sensor (yaw rate sensor) Not detected
IG1 voltage Higher than 9.5 V
Acceleration sensor fail (C051C, C051F, C0520) Not detected
Yaw rate and acceleration sensor power supply voltage (IG) invalidation/validation (CAN communication data) "0" (Valid)