DPB family
DPB_a271_RPSWrongCalibData
Power braking assist reduced
What does the DPB_a271_RPSWrongCalibData alert mean?
Mismatch between RPS calibration data version in NvM and SW version.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
RPS calibration was done by SW which is incompatible with ECU SW. Maybe incompatible SW was flashed?, Check version of RPS calibration data in NvM for compatibility with ECU SW.
When it clears
trigger RPS Calibration
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
Model Y 2025+
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.