RCM2 family
RCM2_a620_comInvalidVehicleSpeed
Not Available
What does the RCM2_a620_comInvalidVehicleSpeed alert mean?
0x155 ESP_B - Invalid VehicleSpeed
What you'll see in your Tesla
- Not Available
What triggers it
The restraint control module has detected an invalid vehicle speed.
When it clears
Auto clears.
Potential impact
The Safety Restraint System may not perform as designed.
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.