DPB family
DPB_a040_plungerCircuitPressLowGoodCheck
Power braking assist reduced
What does the DPB_a040_plungerCircuitPressLowGoodCheck alert mean?
Pressure in plunger circuit is too low (with GoodCheck required).
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
A too low pressure alert occurs, if the actual pressure is much lower than the target pressure.
When it clears
Good Check is successful, if actual pressure is in range of target pressure and not much lower. A hydraulic pressure build up is required
Potential impact
System will be running with internal degraded pedal map. Braking may require increased effort.
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.