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Home >> Lexus >> 2023 >> LS 500h >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/ Advanced Park) - Diagnostic Codes (4 Of 5) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Advanced Park) >> DTC C13D9-09: Brake Pressure Too Low (Brake Booster) Component Failure; DTC C14EC-00: Brake Pressure Control solenoid "C" [11/2021 - 10/2023] >> Description

DTC C13D9-09: Brake Pressure Too Low (Brake Booster) Component Failure; DTC C14EC-00: Brake Pressure Control solenoid "C" [11/2021 - 10/2023]: Description

Refer to DTCs C139A-00, C13D9-00 and C14EC-7E.

Refer to DESCRIPTION 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C13D9-09 Brake Pressure Too Low (Brake Booster) Component Failure Fluid pressure control performance degraded (pressure excessively low).
  • Brake fluid leaks
  • Wire harness and connector
  • Brake booster with master cylinder assembly
Comes on
  • SAE Code: C13D9
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C14EC-00 Brake Pressure Control solenoid "C" SLA valve malfunction (stuck closed, etc.)
  • Brake fluid leaks
  • Wire harness and connector
  • Brake booster with master cylinder assembly
Comes on
  • SAE Code: C14EE
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)