DPB_a050_supplyUndervoltageLvl3
Power braking assist reduced
What does the DPB_a050_supplyUndervoltageLvl3 alert mean?
The voltage supplied to the Decoupled Power Brake (DPB) ECU is below the undervoltage 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 less than the undervoltage shutdown threshold.
When it clears
The issue shall be reset if the supply voltage rises above the undervoltage 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
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.