FixVault
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Mazda
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2002
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MPV ES
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC U0073: Can Bus Off
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Possible Causes
Possible Causes
Short to power or ground between TCM and PCM harness connectors.
CAN communication line shorted to each other.
CAN controller damaged.