VCFRONT-A236
VCFRONT_a236_batTempSnsIrrational
Also written as VCFRONT_A236 / VCFRONT A236 / VCFRONT_a236_batTempSnsIrrational / vcfront_a236_battempsnsirrational
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does VCFRONT-A236 mean?
Tesla alert code in the Vehicle Controller Front (VCFRONT) module. The battery's coolant temperature sensor is reporting an incorrect value. Possible VCFRONT internal electrical issue. Powertrain performance may be limited. An irrational difference in the battery coolant temperature sensor values and the battery's own temperature sensor values. Difference between the battery coolant temperature sensor value and the battery's temperature sensor values is nominal. The stability controller eFuse temperature value reported > 10degC/S increase. The low voltage (LV) battery is no longer supported by the power conversion system (PCS). The vehicle low voltage electrical system needs to shed electrical loads by cutting power to some systems / electronic control units (ECUs). Low voltage (LV) battery voltage below 12.2V while high voltage (HV) support from the power conversion system (PCS) is requested. Low voltage (LV) battery voltage above 12.9V and high voltage (HV) state is up. Convenience features such as seat heaters, auxiliary ports, and HVAC will no longer be available.
Original Description
The battery's coolant temperature sensor is reporting an incorrect value. Possible VCFRONT internal electrical issue. Powertrain performance may be limited. An irrational difference in the battery coolant temperature sensor values and the battery's own temperature sensor values. Difference between the battery coolant temperature sensor value and the battery's temperature sensor values is nominal. The stability controller eFuse temperature value reported > 10degC/S increase. The low voltage (LV) battery is no longer supported by the power conversion system (PCS). The vehicle low voltage electrical system needs to shed electrical loads by cutting power to some systems / electronic control units (ECUs). Low voltage (LV) battery voltage below 12.2V while high voltage (HV) support from the power conversion system (PCS) is requested. Low voltage (LV) battery voltage above 12.9V and high voltage (HV) state is up. Convenience features such as seat heaters, auxiliary ports, and HVAC will no longer be available.
Affected Tesla Models
What You May Notice
- Vehicle Controller Front alert: The battery's coolant temperature sensor is reporting an incorrect value. Possible VCFRONT internal electrical issue. Po
- Some features (climate, lights, or charging) may be temporarily unavailable
- Alert notification in the Tesla app
How to Diagnose and Resolve
- 1 Perform a soft reboot (hold both scroll wheels)
- 2 Check for pending OTA software updates in Controls > Software
- 3 If multiple features remain non-functional, schedule a service appointment
Severity Notes
VCFRONT-A236 is an Alert in the Vehicle Controller Front system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.