TAS-A222
TAS_a222_compressorPrefillFault
Also written as TAS_A222 / TAS A222 / TAS_a222_compressorPrefillFault / tas_a222_compressorprefillfault
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 TAS-A222 mean?
Tesla alert code in the Thermal Architecture System (TAS) module. Air compressor failed to build pressure when powered. Received a 12V low shed request. No longer requested to load shed.
Original Description
Air compressor failed to build pressure when powered. Received a 12V low shed request. No longer requested to load shed.
Affected Tesla Models
What You May Notice
- Thermal Architecture System alert: Air compressor failed to build pressure when powered. Received a 12V low shed request. No longer requested to load shed.
- Reduced charging speed in cold weather or battery pre-conditioning required
- HVAC performance may be slightly affected
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Check coolant levels if accessible (Model S/X only)
- 3 Avoid DC fast charging until battery temperature normalizes
- 4 Schedule service if the alert appears in warm ambient conditions
Severity Notes
TAS-A222 is an Alert in the Thermal Architecture System system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.