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Mazda
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2020
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CX-30 Base, FWD
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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On-Board Diagnostic - Engine Control System (4 Of 4)
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DTC U2121-00: Can Communication: Communication Error To Vehicle Control Module (VCM) (Us)
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Diagnostic Procedure
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Diagnostic Procedure
Inspect according to the diagnostic procedure in ON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEM]. (See
CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US)
.)