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Home >> Lexus >> 2019 >> LC 500 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (Coupe) (4 Of 4) & Symptom Tests >> Electronically Controlled Brake System >> DTC C1451-72: Motor Drive Permission Malfunction [03/2017 - 09/2018] >> Description

DTC C1451-72: Motor Drive Permission Malfunction [03/2017 - 09/2018]: Description

If air bleeding has not been performed, the skid control ECU (brake booster with master cylinder assembly) stores DTC C1451/72 to prevent the entry of air due to pump motor operation.

DTC C1451/72 is stored when Invalid Mode is selected, the system will not return to normal until the air bleeding procedure is performed.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1451/72 Motor Drive Permission Malfunction 120 Air bleeding has not been performed.
  • Brake fluid leaks
  • Air bleeding not performed
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
C1451 72 42 45 21