VCFRONT-A139
VCFRONT_a139_refrigSuctPresSns
Also written as VCFRONT_A139 / VCFRONT A139 / VCFRONT_a139_refrigSuctPresSns / vcfront_a139_refrigsuctpressns
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-A139 mean?
Tesla alert code in the Vehicle Controller Front (VCFRONT) module. The refrigerant suction pressure sensor has an electrical fault (disconnect, short, or internal). HVAC cabin cooling (air conditioning) and powertrain performance may be limited. The front vehicle controller has opened the voltage supply circuit to the right vehicle controller. Functions on the right side of the vehicle will no longer work including phone as key and the drive inverter.
Original Description
The refrigerant suction pressure sensor has an electrical fault (disconnect, short, or internal). HVAC cabin cooling (air conditioning) and powertrain performance may be limited. The front vehicle controller has opened the voltage supply circuit to the right vehicle controller. Functions on the right side of the vehicle will no longer work including phone as key and the drive inverter.
Affected Tesla Models
What You May Notice
- Vehicle Controller Front alert: The refrigerant suction pressure sensor has an electrical fault (disconnect, short, or internal). HVAC cabin cooling (ai
- 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-A139 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.