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Home >> Mazda >> 2022 >> CX-30 Select >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> On-Board Diagnostic - Vehicle Control Module (3 Of 4) >> DTC U007B-88: Unit Communication Error (Can) [Vehicle Control Module] >> Outline
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DTC U007B-88: Unit Communication Error (Can) [Vehicle Control Module]: Outline

DTC U007B:88 (VEHICLE CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Unit communication error (CAN)
Detection condition
  • The vehicle control module (VCM) determines a BUS OFF condition for the CAN BUS No. 4 communication line for 10 s.
Fail-safe (See DTC TABLE: [VEHICLE CONTROL MODULE (US)] .)
Possible cause
  • Malfunction in CAN BUS No. 4 communication line
  • Malfunction in modules on CAN BUS No. 4 communication line
  • Vehicle control module (VCM) malfunction (built into body control module (BCM))
  • Body control module (BCM) malfunction
System wiring diagram Not applicable