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Home >> Lexus >> 2023 >> LS 500h >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (2 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park) >> DTC C1341: Hydraulic System Malfunction (FR); DTC C1342: Hydraulic System Malfunction (FL); DTC C1343: Hydraulic System Malfunction (RR); DTC C1344: Hydraulic System Malfunction (RL) [10/2020 - 10/2023] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

C14A8

Both of the following conditions are met -
Difference between target front brake pressure LH and front wheel cylinder pressure LH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of front wheel cylinder pressure LH increase Higher than 0.3 seconds
C14A9

Both of the following conditions are met -
Difference between front wheel cylinder pressure LH and target front brake pressure LH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of front wheel cylinder pressure LH decrease Higher than 0.3 seconds
C14AA

Both of the following conditions are met -
Difference between target front brake pressure RH and front wheel cylinder pressure RH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of front wheel cylinder pressure RH increase Higher than 0.3 seconds
C14AB

Both of the following conditions are met -
Difference between front wheel cylinder pressure RH and target front brake pressure RH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of front wheel cylinder pressure RH decrease Higher than 0.3 seconds
C14AC

Both of the following conditions are met -
Difference between target rear brake pressure LH and rear wheel cylinder pressure LH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of rear wheel cylinder pressure LH increase Higher than 0.3 seconds
C14AD

Both of the following conditions are met -
Difference between rear wheel cylinder pressure LH and target rear brake pressure LH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of rear wheel cylinder pressure LH decrease Higher than 0.3 seconds
C14AE

Both of the following conditions are met -
Difference between target rear brake pressure RH and rear wheel cylinder pressure RH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of rear wheel cylinder pressure RH increase Higher than 0.3 seconds
C14AF

Both of the following conditions are met -
Difference between rear wheel cylinder pressure RH and target rear brake pressure RH Higher than 1.0 MPa (10.2 kgf/cm2 , 145 psi)
Delay of rear wheel cylinder pressure RH decrease Higher than 0.3 seconds