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Home >> Hyundai >> 2021 >> Santa Fe Calligraphy, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Head Up Display System Diagnosis (Except HEV) >> DTC B2800-00: MM CAN Bus Off Error >> DTC Information And Inspection >> DTC Setting Condition

DTC Setting Condition

Trouble Shooting Condition Possible Cause
Main Action
  • Monitor the CAN communication
  1. Open/Poor Connection both M-CAN High line and Low line
  2. Short-to-Battery both M-CAN High and Low line coincidentally
  3. Short-to-Ground both M-CAN High and Low line coincidentally
  4. Short between M-CAN High line and Low line
Prerequisite Condition
  • IG key "ON"
  • M-CAN communication: Active
Threshold Value
  • Impossible to send M-CAN message
Diagnosis Time
  • 2 sec
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