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Home >> Honda >> 2021 >> Pilot Special Edition, AWD >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Assist (VSA) System - Advanced Diagnostics >> DTC Advanced Diagnostics >> VSA Related DTCS >> DTC C1020-49: VSA Master Cut Valve Failure (Unexpected Operation)

DTC C1020-49: VSA Master Cut Valve Failure (Unexpected Operation)

Confirmation Procedure Basic Condition:
  • 12 volt battery voltage above 10 V

Operating Condition:

  • 1.

    Start the engine, and wait for 5 seconds.

Execution Initial Diagnosis/Regular Diagnosis
Duration About 2 seconds
DTC Type
  • 1 drive cycle
  • ABS indicator on
  • VSA indicator on
  • Brake system indicator on
Fail Safe Action
  • Stop ABS function
  • Stop VSA function
  • Stop EBD function
  • Stop TCS function
  • Stop engine drag torque control function
  • Stop hill start assist function
  • Stop brake assist function
  • Stop trailer stability assist control function
  • Stop agile handling assist control function
  • Stop CMBS function
  • Stop ACC function
Possible Cause
  • VSA modulator-control unit program not the latest
  • VSA modulator-control unit internal failure