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Home >> Mazda >> 2021 >> CX-5 Signature >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 (On-Board Diagnostic - Rear Body Control Module (RBCM)) >> DTC U0447-86: Communication Error Between Front Body Control Module (FBCM) And Instrument Cluster >> Notes
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DTC U0447-86: Communication Error Between Front Body Control Module (FBCM) And Instrument Cluster: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
System malfunction location  Communication error between front body control module (FBCM) and instrument cluster
Detection condition 
  • The rear body control module (RBCM) receives error signals from the instrument cluster for 10 s or more continuously  with the ignition switched ON (engine off or on).
Fail-safe  -
Possible cause 
  • DTCs are stored in the instrument cluster.
  • Rear body control module (RBCM) malfunction
System wiring diagram  -
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