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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] >> Typical Enabling Conditions

Typical Enabling Conditions

C053D

Monitor runs whenever the following DTCs are not stored C053E: Master cylinder pressure sensor 1 PMC open circuit
C053F: Master cylinder pressure sensor 1 PMC short circuit
C0541: Master cylinder pressure sensor 2 exceeded learning limit
C0542: Master cylinder pressure sensor 2 PMC open circuit
C0543: Master cylinder pressure sensor 2 PMC short circuit
C0562: Brake pedal stroke sensor assembly voltage circuit/open
C056B: Master cylinder pressure sensor 1 PMC sensor fail
C056C: Master cylinder pressure sensor 2 PMC sensor fail
C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C124B: Brake pedal stroke sensor assembly invalid data
C125A: Master cylinder pressure sensor 2 PMC power supply fail
P057C: Brake pedal stroke sensor assembly sensor 1 open circuit
P057D: Brake pedal stroke sensor assembly sensor 1 circuit high
P057E: Brake pedal stroke sensor assembly sensor 1 intermittent/erratic
P05DD: Brake pedal stroke sensor assembly sensor 2 open circuit
P05DE: Brake pedal stroke sensor assembly sensor 2 circuit high
P05DF: Brake pedal stroke sensor assembly sensor 2 intermittent/erratic
P05E0: Brake pedal stroke sensor assembly "A"/"B" correlation
All of the following conditions are met -
Brake pedal stroke sensor assembly circuit fail Not detected
Master cylinder pressure sensor 1 circuit fail Not detected
Master cylinder pressure sensor 2 circuit fail Not detected
Brake Off
C053E, C053F, C0542 AND C0543

Monitor runs whenever the following DTCs are not stored C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C131B (Case 1): Front wheel cylinder pressure sensor LH stuck
C132B (Case 1): Front wheel cylinder pressure sensor RH stuck
C133B (Case 1): Rear wheel cylinder pressure sensor LH stuck
C134C (Case 1): Rear wheel cylinder pressure sensor RH stuck
All of the following conditions are met -
Pressure sensor power supply voltage (VCM) Higher than 4.7 V, and less than 5.3 V
Brake system voltage Higher than 8.5 V
Brake system voltage monitor value Valid
C0541

Monitor runs whenever the following DTCs are not stored C053D: Master cylinder pressure sensor 1 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
C0562: Brake pedal stroke sensor assembly voltage circuit/open
C056B: Master cylinder pressure sensor 1 PMC sensor fail
C056C: Master cylinder pressure sensor 2 PMC sensor fail
C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C124B: Brake pedal stroke sensor assembly invalid data
C125A: Master cylinder pressure sensor 2 PMC power supply fail
P057C: Brake pedal stroke sensor assembly sensor 1 open circuit
P057D: Brake pedal stroke sensor assembly sensor 1 circuit high
P057E: Brake pedal stroke sensor assembly sensor 1 intermittent/erratic
P05DD: Brake pedal stroke sensor assembly sensor 2 open circuit
P05DE: Brake pedal stroke sensor assembly sensor 2 circuit high
P05DF: Brake pedal stroke sensor assembly sensor 2 intermittent/erratic
P05E0: Brake pedal stroke sensor assembly "A"/"B" correlation
All of the following conditions are met -
Brake pedal stroke sensor assembly circuit fail Not detected
Master cylinder pressure sensor 1 circuit fail Not detected
Master cylinder pressure sensor 2 circuit fail Not detected
Brake Off
C056B AND C056C

Monitor runs whenever the following DTCs are not stored None
C122C

Monitor runs whenever the following DTCs are not stored C053D: Master cylinder pressure sensor 1 exceeded learning limit
C053E: Master cylinder pressure sensor 1 PMC open circuit
C053F: Master cylinder pressure sensor 1 PMC short circuit
C0541: Master cylinder pressure sensor 2 exceeded learning limit
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
C0571: Accumulator pressure sensor circuit low
C0572: Accumulator pressure sensor circuit higher
C0574 (Case 1 and 2): Accumulator pressure sensor stuck
C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C1202: Brake fluid level warning switch reservoir level too low
C121A: Accumulator pressure sensor intermittent/erratic
C122C: Master cylinder pressure "A"/"B" correlation
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C1256: Accumulator pressure too low
C125A: Master cylinder pressure sensor 2 PMC power supply fail
C12A7 (Case 1, 2 and 3): Brake pressure control solenoid SLAFL circuit low
C12A8 (Case 1): Brake pressure control solenoid SLAFL circuit high/leakage
C12A8 (Case 2): Brake pressure control solenoid SLAFL circuit high
C12B2 (Case 1, 2 and 3): Brake pressure control solenoid SLRFL circuit low
C12B3 (Case 1): Brake pressure control solenoid SLRFL circuit high/leakage
C12B3 (Case 2): Brake pressure control solenoid SLRFL circuit high
C12BD (Case 1, 2 and 3): Brake pressure control solenoid SLAFR circuit low
C12BE (Case 1): Brake pressure control solenoid SLAFR circuit high/leakage
C12BE (Case 2): Brake pressure control solenoid SLAFR circuit high
C12C8 (Case 1, 2 and 3): Brake pressure control solenoid SLRFR circuit low
C12C9 (Case 1): Brake pressure control solenoid SLRFR circuit high/leakage
C12C9 (Case 2): Brake pressure control solenoid SLRFR circuit high
C12FA: Brake pressure control solenoid main relay 1 open circuit
C12FB: Brake pressure control solenoid main relay 1 short circuit
C130C: Brake pressure control solenoid main relay 2 open circuit
C130D: Brake pressure control solenoid main relay 2 short circuit
C131B (Case 1): Front wheel cylinder pressure sensor LH stuck
C131B (Case 2), C132B (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
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 sensor noise failure
C137C: Brake system voltage circuit low
C13CA: Brake pressure control solenoid 1 range/performance
C13CB: Brake pressure control solenoid 1 circuit low
C13CC (Case 1): Brake pressure control solenoid 1 SMC leakage
C13CC (Case 2): Brake pressure control solenoid 1 over current fail
C14A8, C14AA: Brake pressure too low
C14A9, C14AB: Brake pressure too high
C14F2: Brake pressure control solenoid 2 range/performance
C14F3: Brake pressure control solenoid 2 circuit low
C14F4 (Case 1): Brake pressure control solenoid 2 SMC leakage
C14F4 (Case 2): Brake pressure control solenoid 2 over current fail
All of the following conditions are met -
Master cylinder pressure sensor 1 circuit fail Not detected
Master cylinder pressure sensor 2 circuit fail Not detected
Brake-by-wire cuntrolled mode On
Brake pedal operation On
C122D, C125A

Monitor runs whenever the following DTCs are not stored C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
Both of the following conditions are met -
Brake system voltage Higher than 8.5 V
Brake system voltage monitor value Valid
C131B (CASE 1), C132B (CASE 1), C133B (CASE 1), C134C (CASE 1)

Monitor runs whenever the following DTCs are not stored C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
Pressure sensor stuck detection trigger signal On
C131B (CASE 2)

Monitor runs whenever the following DTCs are not stored C053D: Master cylinder pressure sensor 1 exceeded learning limit
C053E: Master cylinder pressure sensor 1 PMC open circuit
C053F: Master cylinder pressure sensor 1 PMC short circuit
C0541: Master cylinder pressure sensor 2 exceeded learning limit
C0542: Master cylinder pressure sensor 2 PMC open circuit
C0543: Master cylinder pressure sensor 2 PMC short circuit
C0562: Brake pedal stroke sensor assembly voltage circuit/open
C056B: Master cylinder pressure sensor 1 PMC sensor fail
C056C: Master cylinder pressure sensor 2 PMC sensor fail
C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C122C: Master cylinder pressure "A"/"B" correlation
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C124B: Brake pedal stroke sensor assembly invalid data
C125A: Master cylinder pressure sensor 2 PMC power supply fail
C131B (Case 1): Front wheel cylinder pressure sensor LH stuck
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
P057C: Brake pedal stroke sensor assembly sensor 1 open circuit
P057D: Brake pedal stroke sensor assembly sensor 1 circuit high
P057E: Brake pedal stroke sensor assembly sensor 1 intermittent/erratic
P05DD: Brake pedal stroke sensor assembly sensor 2 open circuit
P05DE: Brake pedal stroke sensor assembly sensor 2 circuit high
P05DF: Brake pedal stroke sensor assembly sensor 2 intermittent/erratic
P05E0: Brake pedal stroke sensor assembly "A"/"B" correlation
All of the following conditions are met -
Front wheel cylinder pressure sensor LH circuit fail Not detected
Brake pedal stroke sensor assembly circuit fail Not detected
Master cylinder pressure sensor 1 circuit fail Not detected
Master cylinder pressure sensor 2 circuit fail Not detected
Brake Off
C131C, C131D, C132C, C132D, C133C, C133D, C134D AND C134E

Monitor runs whenever the following DTCs are not stored C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C131B (Case 1): Front wheel cylinder pressure sensor LH stuck
C132B (Case 1): Front wheel cylinder pressure sensor RH stuck
C133B (Case 1): Rear wheel cylinder pressure sensor LH stuck
C134C (Case 1): Rear wheel cylinder pressure sensor RH stuck
All of the following conditions are met -
Brake system voltage Higher than 8.5 V
Brake system voltage monitor value Valid
Pressure sensor power supply voltage (VCM) Higher than 4.7 V, and less than 5.3 V
Pressure sensor stuck failure detection trigger signal is met for 0.018 seconds or more Met
C131E, C132E, C133E AND C134F

Monitor runs whenever the following DTCs are not stored None
C131F, C132F, C133F AND C1334

Monitor runs whenever the following DTCs are not stored C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C132B (CASE 2)

Monitor runs whenever the following DTCs are not stored C053D: Master cylinder pressure sensor 1 exceeded learning limit
C053E: Master cylinder pressure sensor 1 PMC open circuit
C053F: Master cylinder pressure sensor 1 PMC short circuit
C0541: Master cylinder pressure sensor 2 exceeded learning limit
C0542: Master cylinder pressure sensor 2 PMC open circuit
C0543: Master cylinder pressure sensor 2 PMC short circuit
C0562: Brake pedal stroke sensor assembly voltage circuit/open
C056B: Master cylinder pressure sensor 1 PMC sensor fail
C056C: Master cylinder pressure sensor 2 PMC sensor fail
C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C122C: Master cylinder pressure sensor "A"/"B" correlation
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C124B: Brake pedal stroke sensor assembly invalid data
C125A: Master cylinder pressure sensor 2 PMC power supply fail
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
P057C: Brake pedal stroke sensor assembly sensor 1 open circuit
P057D: Brake pedal stroke sensor assembly sensor 1 circuit high
P057E: Brake pedal stroke sensor assembly sensor 1 intermittent/erratic
P05DD: Brake pedal stroke sensor assembly sensor 2 open circuit
P05DE: Brake pedal stroke sensor assembly sensor 2 circuit high
P05DF: Brake pedal stroke sensor assembly sensor 2 intermittent/erratic
P05E0: Brake pedal stroke sensor assembly "A"/"B" correlation
All of the following conditions are met -
Front wheel cylinder pressure sensor RH circuit fail Not detected
Brake pedal stroke sensor assembly circuit fail Not detected
Master cylinder pressure sensor 1 circuit fail Not detected
Master cylinder pressure sensor 2 circuit fail Not detected
Brake Off
C133B (CASE 2)

Monitor runs whenever the following DTCs are not stored C053D: Master cylinder pressure sensor 1 exceeded learning limit
C053E: Master cylinder pressure sensor 1 PMC open circuit
C053F: Master cylinder pressure sensor 1 PMC short circuit
C0541: Master cylinder pressure sensor 2 exceeded learning limit
C0542: Master cylinder pressure sensor 2 PMC open circuit
C0543: Master cylinder pressure sensor 2 PMC short circuit
C0562: Brake pedal stroke sensor assembly voltage circuit/open
C056B: Master cylinder pressure sensor 1 PMC sensor fail
C056C: Master cylinder pressure sensor 2 PMC sensor fail
C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C122C: Master cylinder pressure sensor "A"/"B" correlation
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C124B: Brake pedal stroke sensor assembly invalid data
C125A: Master cylinder pressure sensor 2 PMC power supply fail
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
P057C: Brake pedal stroke sensor assembly sensor 1 open circuit
P057D: Brake pedal stroke sensor assembly sensor 1 circuit high
P057E: Brake pedal stroke sensor assembly sensor 1 intermittent/erratic
P05DD: Brake pedal stroke sensor assembly sensor 2 open circuit
P05DE: Brake pedal stroke sensor assembly sensor 2 circuit high
P05DF: Brake pedal stroke sensor assembly sensor 2 intermittent/erratic
P05E0: Brake pedal stroke sensor assembly "A"/"B" correlation
All of the following conditions are met -
Rear wheel cylinder pressure sensor LH circuit fail Not detected
Brake pedal stroke sensor assembly circuit fail Not detected
Master cylinder pressure sensor 1 circuit fail Not detected
Master cylinder pressure sensor 2 circuit fail Not detected
Brake Off
C134C (CASE 2)

Monitor runs whenever the following DTCs are not stored C053D: Master cylinder pressure sensor 1 exceeded learning limit
C053E: Master cylinder pressure sensor 1 PMC open circuit
C053F: Master cylinder pressure sensor 1 PMC short circuit
C0541: Master cylinder pressure sensor 2 exceeded learning limit
C0542: Master cylinder pressure sensor 2 PMC open circuit
C0543: Master cylinder pressure sensor 2 PMC short circuit
C0562: Brake pedal stroke sensor assembly voltage circuit/open
C056B: Master cylinder pressure sensor 1 PMC sensor fail
C056C: Master cylinder pressure sensor 2 PMC sensor fail
C0597 (Case 1): EEPROM malfunction
C0597 (Case 2): Lost communication
C0597 (Case 3 and 5): CPU malfunction
C0597 (Case 4): IC malfunction
C122C: Master cylinder pressure sensor "A"/"B" correlation
C122D: Master cylinder pressure sensor 1 PMC power supply fail
C124B: Brake pedal stroke sensor assembly invalid data
C125A: Master cylinder pressure sensor 2 PMC power supply fail
C1334: Rear wheel cylinder pressure sensor RH 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
P057C: Brake pedal stroke sensor assembly sensor 1 open circuit
P057D: Brake pedal stroke sensor assembly sensor 1 circuit high
P057E: Brake pedal stroke sensor assembly sensor 1 intermittent/erratic
P05DD: Brake pedal stroke sensor assembly sensor 2 open circuit
P05DE: Brake pedal stroke sensor assembly sensor 2 circuit high
P05DF: Brake pedal stroke sensor assembly sensor 2 intermittent/erratic
P05E0: Brake pedal stroke sensor assembly "A"/"B" correlation
All of the following conditions are met -
Rear wheel cylinder pressure sensor RH circuit fail Not detected
Brake pedal stroke sensor assembly circuit fail Not detected
Master cylinder pressure sensor 1 circuit fail Not detected
Master cylinder pressure sensor 2 circuit fail Not detected
Brake Off
C14D6

Monitor runs whenever the following DTCs are not stored None
Following conditions is met Higher than 0.018 seconds
Pressure sensor power supply voltage (VCM) Higher than 4.7 V, and less than 5.3 V