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DTC Description: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • High pressure accumulator pressure monitoring
  1. Electrical noise signal
  2. Abnormal pressure value due to residual air in brake system
  3. Faulty pressure sensor (built in IBAU)
Enable Conditions
  • High pressure accumulator pressure and 1/2 of boost chamber pressure is not matched during IBAU control
  • Over 30 bar of pressure change in high pressure accumulator for 100 times is detected within 2 sec.
Check Lamp
  • Brake (EBD), ABS, ESC (ESP), AVH (yellow), buzzer
Remark
  • Clear condition: Ignition switch "OFF" and then "ON" and brake pedal operation (press and release) for 3 sec.