DPB family
DPB_a014_CANControllerHWFault
Power braking assist reduced
What does the DPB_a014_CANControllerHWFault alert mean?
CAN Timeout caused by Hardware-Error.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
CAN error caused by Decoupled Power Brake (DPB) hardware error.
When it clears
CAN registers are updated within expected time
Potential impact
System will be running with internal degraded pedal map. Braking may require increased effort.
Affected models
Model Y 2025+
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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.