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Home >> Lexus >> 2021 >> LC 500 2D Coupe >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (Coupe) (3 Of 4) >> Electronically Controlled Brake System >> DTC C1341/62: Front Hydraulic System RH Malfunction; DTC C1342/63: Front Hydraulic System LH Malfunction; DTC C1343/64: Rear Hydraulic System RH Malfunction; DTC C1344/65: Rear Hydraulic System LH Malfunction [03/2017 - 09/2018] >> Description

DTC C1341/62: Front Hydraulic System RH Malfunction; DTC C1342/63: Front Hydraulic System LH Malfunction; DTC C1343/64: Rear Hydraulic System RH Malfunction; DTC C1344/65: Rear Hydraulic System LH Malfunction [03/2017 - 09/2018]: Description

To control the braking force for each wheel, the skid control ECU assembly inputs the operating fluid pressure of each wheel cylinder from the wheel cylinder pressure sensors.

DTCs may be stored if one of the following occurs:

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1341/62 Front Hydraulic System RH Malfunction 551
552
553
554
555
  • INF Code: 551
    • Decrease in FR wheel hydraulic pressure control performance.

      (Pressure increase malfunction)

  • INF Code: 552
    • Decrease in FR wheel hydraulic pressure control performance.

      (Pressure decrease malfunction)

  • INF Code: 553
    • Malfunctions such as leaks occur in the FR wheel pressure increase control valve.
  • INF Code: 554, 555
    • Malfunctions such as leaks occur in the FR wheel pressure decrease control valve.
  • INF Code: 551, 552
    • Brake fluid leaks
    • Brake actuator assembly
  • INF Code: 553, 554, 555
    • Brake fluid leaks
    • Brake disc rotor excessive wear
    • Brake actuator assembly
Electronically controlled brake system DTC
C1342/63 Front Hydraulic System LH Malfunction 561
562
563
564
565
  • INF Code: 561
    • Decrease in FL wheel hydraulic pressure control performance.

      (Pressure increase malfunction)

  • INF Code: 562
    • Decrease in FL wheel hydraulic pressure control performance.

      (Pressure decrease malfunction)

  • INF Code: 563
    • Malfunctions such as leaks occur in the FL wheel pressure increase control valve.
  • INF Code: 564, 565
    • Malfunctions such as leaks occur in the FL wheel pressure decrease control valve.
  • INF Code: 561, 562
    • Brake fluid leaks
    • Brake actuator assembly
  • INF Code: 563, 564, 565
    • Brake fluid leaks
    • Brake disc rotor excessive wear
    • Brake actuator assembly
Electronically controlled brake system DTC
C1343/64 Rear Hydraulic System RH Malfunction 571
572
573
574
575
  • INF Code: 571
    • Decrease in RR wheel hydraulic pressure control performance.

      (Pressure increase malfunction)

  • INF Code: 572
    • Decrease in RR wheel hydraulic pressure control performance.

      (Pressure decrease malfunction)

  • INF Code: 573
    • Malfunctions such as leaks occur in the RR wheel pressure increase control valve.
  • INF Code: 574, 575
    • Malfunctions such as leaks occur in the RR wheel pressure decrease control valve.
  • INF Code: 571, 572
    • Brake fluid leaks
    • Brake actuator assembly
  • INF Code: 573, 574, 575
    • Brake fluid leaks
    • Brake disc rotor excessive wear
    • Brake actuator assembly
Electronically controlled brake system DTC
C1344/65 Rear Hydraulic System LH Malfunction 581
582
583
584
585
  • INF Code: 581
    • Decrease in RL wheel hydraulic pressure control performance.

      (Pressure increase malfunction)

  • INF Code: 582
    • Decrease in RL wheel hydraulic pressure control performance.

      (Pressure decrease malfunction)

  • INF Code: 583
    • There is a malfunction or leak in the RL wheel pressure increase control valve.
  • INF Code: 584, 585
    • There is a malfunction or leak in the RL wheel pressure decrease control valve.
  • INF Code: 581, 582
    • Brake fluid leaks
    • Brake actuator assembly
  • INF Code: 583, 584, 585
    • Brake fluid leaks
    • Brake disc rotor excessive wear
    • Brake actuator assembly
Electronically controlled brake system DTC
DTC No. Brake warning light / yellow (minor malfunction) code ABS warning light code Slip indicator light code Brake hold standby indicator light code
C1341 62 42 45 21
C1342 63 42 45 21
C1343 64 42 45 21
C1344 65 42 45 21