MyTeslaMate
DPB family

DPB_a046_supplyOvervoltageLvl3

Power braking assist reduced

What does the DPB_a046_supplyOvervoltageLvl3 alert mean?

The voltage supplied to the Decoupled Power Brake (DPB) ECU is above the overvoltage shutdown threshold. Brake system performance is reduced.

What you'll see in your Tesla

  • Power braking assist reduced
  • Braking may require increased effort

What triggers it

The voltage supplied to the DPB ECU is above the shutdown threshold.

When it clears

The issue shall be reset if the supply voltage falls below the overvoltage shutdown level.

Potential impact

System will be running in fully degraded state. Braking may require increased effort. Hydraulic Boost Compensation will be triggered when driver pressed brake pedal.

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.