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Home >> Mazda >> 2024 >> CX-30 Select Sport >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Body Control Module (BCM) (3 Of 4) >> DTC U2121-49: Communication Error With Vehicle Control Module (VCM) (BCM)

DTC U2121-49: Communication Error With Vehicle Control Module (VCM) (BCM)

U2121: 49 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Communication error with vehicle control module (VCM)
Detection condition
  • The body control module (BCM) cannot receive CAN signal from the vehicle control module (VCM).
Fail-safe
  • Not applicable
Possible cause
  1. Body control module (BCM) malfunction (Refer to applicable BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION in workshop manual.)
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (see CLEARING DTC .)
System wiring diagram
  • Not applicable