TAS-A162
TAS_a162_compressorValveOpenGND
Also written as TAS_A162 / TAS A162 / TAS_a162_compressorValveOpenGND / tas_a162_compressorvalveopengnd
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-A162 mean?
Tesla alert code in the Thermal Architecture System (TAS) module. Ground return wire from exhaust/boost valve block detected disconnected. One or more CAN messages from UI are not being received by the ECU. One or more CAN messages from UI are not being received by the ECU (missing, bad RX rate, or invalid checksum/counter). Successful reception of all RXd CAN messages from UI. Air suspension functionality may be reduced. Pressure sensor signal voltage too high. Pressure sensor signal received is too high. ECU has requested suspension yellow warning lamp to be displayed. ECU has requested suspension yellow warning lamp to not be displayed. Yellow suspension warning lamp will be displayed. Exhaust air valve detected open circuit. Exhaust air valve commanded on but no electrical current measured. Signal to UI to show suspension geofence notification. Suspension height target change due to suspension geofence. Abnormal PWM signal received from rear left PWM height sensor. Internal air spring or air reservoir valve leak detected. Air pressure increase while idle measured over time. No air pressure increase while idle measured over time. Possible decrease in vehicle ride height while vehicle sleeps.
Original Description
Ground return wire from exhaust/boost valve block detected disconnected. One or more CAN messages from UI are not being received by the ECU. One or more CAN messages from UI are not being received by the ECU (missing, bad RX rate, or invalid checksum/counter). Successful reception of all RXd CAN messages from UI. Air suspension functionality may be reduced. Pressure sensor signal voltage too high. Pressure sensor signal received is too high. ECU has requested suspension yellow warning lamp to be displayed. ECU has requested suspension yellow warning lamp to not be displayed. Yellow suspension warning lamp will be displayed. Exhaust air valve detected open circuit. Exhaust air valve commanded on but no electrical current measured. Signal to UI to show suspension geofence notification. Suspension height target change due to suspension geofence. Abnormal PWM signal received from rear left PWM height sensor. Internal air spring or air reservoir valve leak detected. Air pressure increase while idle measured over time. No air pressure increase while idle measured over time. Possible decrease in vehicle ride height while vehicle sleeps.
Affected Tesla Models
What You May Notice
- Thermal Architecture System alert: Ground return wire from exhaust/boost valve block detected disconnected. One or more CAN messages from UI are not being
- 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-A162 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.