Code TAS_a319 was reported by the “Air suspension” controller in the car. The letter “a” in the middle places it among entries of the alert type.
Tesla Air Suspension — the air chassis: compressor, valves, ride height sensors. These codes show up as the car being unable to raise or level the body, or reporting a loss of pressure. On Model S and X this is a common age-related fault.
The most common type. The car logged the event and may have shown it on the screen. The range is wide — from something trivial that clears itself to something that needs attention.
This is how the fault is named inside the car's firmware. For codes without a description it is the most precise clue there is — the name itself says what the event is about.
The text below comes from Tesla's technical documentation. We leave it in the original English so that translation cannot shift its meaning.
Firmware's supported drivetrain type does not match drivetrain type reported by vehicle's gateway.
Firmware's supported drivetrain type does match drivetrain type reported by vehicle's gateway.
Air suspension leveling will be disabled. All dampers will be unpowered.
Supply voltage to ECU is below 8.5V
Supply voltage to ECU drops below 8.5V
Supply voltage to ECU rises above 9.0V
No direct impact, but functionality may degrade or ECU may reset/shutdown.
Front right air valve detected open circuit.
Front right air valve commanded on but no electrical current measured.
Rear axle has been measured to be higher than any reasonable height.
Rear axle has been measured to be higher than any reasonable height for an extended period.
Rear axle has been measured to be not be higher than any reasonable height for an extended period.
Supply voltage to ECU is above 16.5V
Supply voltage to ECU rises above 16.5V
Supply voltage to ECU drops below 16.0V
No direct impact, but functionality may degrade or ECU may be damaged.
Abnormal PWM signal received from rear left PWM height sensor. More sensitive than other ride height sensor alerts.
Abnormal PWM signal received from rear left ride height sensor.
Abnormal PWM signal received from front left PWM height sensor.
Firmware's supported chassis type does not match chassis type reported by vehicle's gateway.
Firmware's supported chassis type does match chassis type reported by vehicle's gateway.
Copy it exactly, letter and number included. Photographing the screen is safest — codes often differ by a single digit, and mixing them up leads somewhere else entirely.
Some codes clear after a screen restart or after the car sits locked for a few hours. If the code does not come back, it was usually a one-off glitch.
A one-off entry and a code that appears after every drive are two different things. It helps a service centre enormously if you know exactly when it shows up.
With airbags, brakes, steering and high voltage there is no point waiting it out. With the other groups you can watch and see whether the code returns at all.
Error codes are only part of the picture. For cars on TesList you also see battery health pulled straight from the vehicle, plus a price calculator that works out from current listings what a given car is actually worth today.