DPB_a243_microSupplyError
Power braking assist reduced
What does the DPB_a243_microSupplyError alert mean?
Voltage monitor of micro controller has detected an alert of the micro controller supply voltage.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
Core voltage is out of range. In case the core voltage is out of range (over/under-voltage), the Core Voltage Monitor issues a reset. Once the core voltage is in range again, a alert will be reported.
When it clears
No internal issue is detected after changing operation cycle. If the condition persists, the DPB module may require replacement.
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.