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Home >> VinFast >> 2023 >> VF9 Eco >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Communication Gateway Diagnosis (1 Of 2) >> DTC B2004-04: Multi-Function Switch Control Module - System Internal Failure >> VinFast DTC Guided Repair Instruction >> Failure Description
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Failure Description

Vehicle Program VF8/VF9
ECU XGW
DTC Number B2004-04 
DTC Name Multi-Function Switch Control Module - System Internal Failure
Failure Type Byte 04 - System Internal Failure
Definition and Potential Cause This error occurs due to fault in wiring harness between MFS and XGW or Fault in MFS Unit.
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