Code TAS_a232 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 suspension type does not match suspension type reported by vehicle's gateway.
Firmware's supported suspension type does match suspension type reported by vehicle's gateway.
Signal line from front right PWM height sensor shorted to ground.
Front left air valve detected short circuit.
Front left air valve output shorted to ground or battery voltage.
The one time programmable memory driver has encountered an error.
A successful read from one time programmable memory.
Genealogy information may be unavailable to application firmware.
Rear left air valve detected short circuit.
Rear left air valve output shorted to ground or battery voltage.
Static vehicle spring leak check detected a spring leak on the rear left air spring.
Rear left air spring leak was detected with vehicle static.
Rear right air valve detected short circuit.
Rear right air valve output shorted to ground or battery voltage.
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.