SCM family
SCM_a091_voltageRiseDetection
Not Available
What does the SCM_a091_voltageRiseDetection alert mean?
Supercharger detected a voltage arc, either legitimately, or as a result of the High Voltage (HV) circuit being opened under load.
What you'll see in your Tesla
- Not Available
What triggers it
Supercharger detects a rapid change in energy on the HV bus, matching the signature for an arc.
When it clears
Charge handle is disconnected from vehicle.
Potential impact
May result in thermal damage to components, or welding/fatigue on Fast Charge (FC) contactors.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
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.