TAS-A290
TAS_a290_twistSustainedAtSpeed
Also written as TAS_A290 / TAS A290 / TAS_a290_twistSustainedAtSpeed / tas_a290_twistsustainedatspeed
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-A290 mean?
Tesla alert code in the Thermal Architecture System (TAS) module. Ride height sensors are measured to be in twisted or implausible state. Implausible condition detected on rear right air valve circuit, possibly due to ECU hardware failure. Implausible condition detected on front left air valve circuit. Air compressor has reached its duty cycle (on time) limit. Air compressor has dropped below its duty cycle (on time) limit, plus some hysteresis. Air suspension leveling via the air compressor will be temporarily disabled until air compressor duty cycle drops. Abnormal PWM signal received from front right PWM height sensor. More sensitive than other ride height sensor alerts. Implausible condition detected on air compressor or air compressor relay circuit, possibly due to ECU hardware failure. Implausible condition detected on front right air valve circuit. Implausible condition detected on front right air valve circuit, possibly due to ECU hardware failure. Air suspension system is operating under limp home mode 20 restrictions. The ECU has detected an issue whose severity requires operating under limp home mode 20 restrictions.
Original Description
Ride height sensors are measured to be in twisted or implausible state. Implausible condition detected on rear right air valve circuit, possibly due to ECU hardware failure. Implausible condition detected on front left air valve circuit. Air compressor has reached its duty cycle (on time) limit. Air compressor has dropped below its duty cycle (on time) limit, plus some hysteresis. Air suspension leveling via the air compressor will be temporarily disabled until air compressor duty cycle drops. Abnormal PWM signal received from front right PWM height sensor. More sensitive than other ride height sensor alerts. Implausible condition detected on air compressor or air compressor relay circuit, possibly due to ECU hardware failure. Implausible condition detected on front right air valve circuit. Implausible condition detected on front right air valve circuit, possibly due to ECU hardware failure. Air suspension system is operating under limp home mode 20 restrictions. The ECU has detected an issue whose severity requires operating under limp home mode 20 restrictions.
Affected Tesla Models
What You May Notice
- Thermal Architecture System alert: Ride height sensors are measured to be in twisted or implausible state. Implausible condition detected on rear right air
- 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-A290 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.