DPB_a231_stackOverUnderFlow
Power braking assist reduced
What does the DPB_a231_stackOverUnderFlow alert mean?
Stack over- or underflow.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
The stack is too small for the application, Overflow: The stack is too small for the application. Underflow: Can only occur in case of SW or compiler faults.
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.