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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 C1246: Master Cylinder Pressure Sensor; DTC C1364: Wheel Cylinder Pressure Sensor [10/2020 - 10/2023] >> Monitor Strategy

Monitor Strategy

Related DTCs C053D: Master cylinder pressure sensor 1 exceeded learning limit
C0541: Master cylinder pressure sensor 2 exceeded learning limit
C053E: Master cylinder pressure sensor 1 PMC open circuit
C053F: Master cylinder pressure sensor 1 PMC short circuit
C0542: Master cylinder pressure sensor 2 PMC open circuit
C0543: Master cylinder pressure sensor 2 PMC short circuit
C056B: Master cylinder pressure sensor 1 PMC sensor fail
C056C: Master cylinder pressure sensor 2 PMC sensor fail
C122C: Master cylinder pressure "A"/"B" correlation
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C125A: Master cylinder pressure sensor 2 PMC power supply fail
C131B (Case 1): Front wheel cylinder pressure sensor LH stuck
C131B (Case 2), C132B (Case 2), C133B (Case 2) and C134C (Case 2): Wheel cylinder pressure sensor exceeded learning limit
C131C: Front wheel cylinder pressure sensor LH open circuit
C131D: Front wheel cylinder pressure sensor LH short circuit
C131E: Front wheel cylinder pressure sensor LH noise failure
C131F: Front wheel cylinder pressure sensor LH power supply failure
C132B (Case 1): Front wheel cylinder pressure sensor RH stuck
C132C: Front wheel cylinder pressure sensor RH open circuit
C132D: Front wheel cylinder pressure sensor RH short circuit
C132E: Front wheel cylinder pressure sensor RH noise failure
C132F: Front wheel cylinder pressure sensor RH power supply failure
C1334: Rear wheel cylinder pressure sensor RH power supply failure
C133B (Case 1): Rear wheel cylinder pressure sensor LH stuck
C133C: Rear wheel cylinder pressure sensor LH open circuit
C133D: Rear wheel cylinder pressure sensor LH short circuit
C133E: Rear wheel cylinder pressure sensor LH noise failure
C133F: Rear wheel cylinder pressure sensor LH power supply failure
C134C (Case 1): Rear wheel cylinder pressure sensor RH stuck
C134D: Rear wheel cylinder pressure sensor RH open circuit
C134E: Rear wheel cylinder pressure sensor RH short circuit
C134F: Rear wheel cylinder pressure sensor RH noise failure
C14D6: Master cylinder pressure sensor "A"/"B" invalid data
Required Sensors/Components (Main) Brake actuator assembly
Required Sensors/Components (Related) Skid control ECU assembly
Brake pedal stroke sensor assembly
Brake actuator assembly
Stop light switch assembly
Frequency of Operation Continuous
Duration Within 1 second: C053E (Case 1 and 2), C053F (Case 1 and 2), C0542 (Case 1 and 2), C0543 (Case 1 and 2), C056B, C056C, C122D, C125A, C131B (Case 1), C131C, C131D, C131E, C131F, C132B (Case 1), C132C, C132D, C132E, C132F, C1334, C133B (Case 1), C133C, C133D, C133E, C133F, C134C (Case 1), C134D, C134E, C134F and C14D6
3 seconds: C053D, C0541, C131B (Case 2), C132B (Case 2), C133B (Case 2) and C134C (Case 2)
5 seconds: C122C
MIL Operation Immediately
Sequence of Operation None