DPB family
DPB_a016_CAN2BusOff
Not Available
What does the DPB_a016_CAN2BusOff alert mean?
Second CAN bus is detected as OFF.
What you'll see in your Tesla
- Not Available
What triggers it
Short circuit between CAN + and CAN- or short circuit between CAN + and Ubatt or heavy bus disturbance, The bus-off recovery state machine of the CAN network has detected a certain amount of sequential bus-offs without successful recovery.
When it clears
Proper CAN communication
Potential impact
System will be running with full assistant for driver brake request.
Affected models
Model Y 2025+
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.