MyTeslaMate
VCFRONT family

VCFRONT_a223_12VTempSensDiscnect

Not Available

What does the VCFRONT_a223_12VTempSensDiscnect alert mean?

The vehicle controller is reporting an open circuit on the low voltage (LV) battery temperature sensor, indicating damage to the sensor or wiring harness.

What you'll see in your Tesla

  • Not Available

What triggers it

The LV battery temperature sensor circuit reads a ground reference voltage, indicating an open circuit (disconnected).

When it clears

The LV battery temperature sensor circuit no longer reads a ground reference voltage.

Potential impact

A default voltage setpoint is used when charging the LV battery, instead of optimizing the voltage setpoint based on the LV battery's actual temperature. The LV battery may experience accelerated degradation if this continues.

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.