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Home >> Mazda >> 2024 >> CX-30 Select Sport >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control (VIN M) (6 Of 6) >> DTC U0140-00: Can Communication System: Communication Error To Body Control Module (BCM)
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DTC U0140-00: Can Communication System: Communication Error To Body Control Module (BCM)

U0140:00 (PCM - VIN M) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location CAN communication system: Communication error to body control module (BCM)
Detection condition
  • Communication error between the PCM and body control module (BCM) continues for a specified period of time.
Fail-safe
  • Inhibits engine-stop by operating the i-stop function.
Possible cause
  1. Malfunction in CAN communication line between body control module (BCM) and PCM
    NOTE:
  2. Body control module (BCM) malfunction (Refer to applicable BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION in the service information.)
  3. PCM malfunction (Refer to applicable PCM REMOVAL/INSTALLATION (VIN M) in the service information.)
Repeatability verification procedure
  • Not applicable
System wiring diagram
  • Not applicable