VCFRONT-A393
VCFRONT_a393_ambientTempNetworkSna
Also written as VCFRONT_A393 / VCFRONT A393 / VCFRONT_a393_ambientTempNetworkSna / vcfront_a393_ambienttempnetworksna
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-A393 mean?
Tesla alert code in the Vehicle Controller Front (VCFRONT) module. The raw ambient temperature sensor signal from VCRIGHT is not available on CAN. HVAC cabin cooling (air conditioning) and powertrain performance may be limited.
Original Description
The raw ambient temperature sensor signal from VCRIGHT is not available on CAN. HVAC cabin cooling (air conditioning) and powertrain performance may be limited.
Affected Tesla Models
What You May Notice
- Vehicle Controller Front alert: The raw ambient temperature sensor signal from VCRIGHT is not available on CAN. HVAC cabin cooling (air conditioning) an
- 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-A393 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.