Lexus NX Tire Pressure Sensor Fault

That sounds like a potential sensor fault. The low tire pressure warning, error message, and stored error code point to a TPMS issue. How old are the sensors? Has the low tire pressure light been on constantly, or does it appear intermittently?

I'm unsure of the sensor age, they're original. The low tire pressure light is constantly on, not intermittent. Does this confirm a faulty sensor?

Yes, a constantly illuminated light strengthens the likelihood of a faulty sensor. Given the car's age and mileage, the sensor battery is likely depleted. Have the sensors checked and replaced at a workshop. Repair cost should be around 280€.

I took the car to a local workshop. You were right, the tire pressure sensor battery was empty and the sensor was faulty. Replacing it fixed it. The total cost was 280€. Thanks!