DPB_a089_ecuBandgap
Power braking assist reduced
What does the DPB_a089_ecuBandgap alert mean?
The Decoupled Power Brake (DPB) ECU reports a condition affecting its bandgap.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
The bandgap voltage measured by the Analog-to-Digital Converter (ADC) is not within specification. This can be due to an issue affecting the ADC.
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
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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.