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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/ Advanced Park) - Diagnostic Codes (3 Of 5) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Advanced Park) >> DTC C126E-15: Reservoir Level Switch Circuit Short to Battery or Open [11/2021 - 10/2023] >> Description

DTC C126E-15: Reservoir Level Switch Circuit Short to Battery or Open [11/2021 - 10/2023]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C126E-15 Reservoir Level Switch Circuit Short to Battery or Open The brake fluid level warning switch (brake booster with master cylinder assembly) circuit is open for 2 seconds or more.
  • Open in brake fluid level warning switch (brake booster with master cylinder assembly)
  • Open in wire harness
  • Uneven brake disc rotor wear
  • Brake fluid leaks
  • Low brake fluid
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
Comes on
  • SAE Code: C120F
  • Output ECU: Both skid control ECUs