DPB family
DPB_a047_pPlungerPlausCheckFailure
Power braking assist reduced
What does the DPB_a047_pPlungerPlausCheckFailure alert mean?
Pressure sensor signal implausible high compared to motor load.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
Pressure sensor of active circuit shows an implausible too high pressure. Calculation of the expected pressure based on motor torque, angular acceleration and best-case gear efficiency and comparison with the pressure sensor signal.
When it clears
Ignition off; wait 5 seconds; Ignition on
Potential impact
System will request Hydraulic Boost Compensation when driver pressed the brake pedal.
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.