Genesis TPMS Sensor Fault

The symptoms you describe strongly suggest a problem within the Tire Pressure Monitoring System (TPMS). You verified the actual tire pressures with a gauge, but the electronic system relies on individual sensors within each wheel. A common cause, especially in a vehicle of that age, is sensor battery degradation. Have you recently had your tires rotated or replaced? Sometimes, a sensor can be damaged during the process. Is the error message specific to one particular tire, or is it a general system fault?

I haven't had the tires rotated or replaced recently. The error message doesn't specify a particular tire; it just says 'low tire pressure' and the error code points to a TPMS fault in general. So, you think it's probably just the sensor batteries?

Given the age of your Genesis and the generalized nature of the fault, depleted sensor batteries are indeed the most probable cause. Each sensor contains a small battery with a finite lifespan. After 10 years and 109443 km, it would be logical to expect them to start failing. To definitively diagnose the issue and avoid potential complications, I'd recommend visiting a reputable workshop equipped with TPMS diagnostic tools. They can pinpoint the faulty sensor(s) and replace them. Attempting DIY repairs on the TPMS system without proper equipment could inadvertently damage the system or lead to inaccurate readings.

Took your advice and went to the workshop. You were spot on! It was indeed the sensor batteries. Replaced all four sensors, and the error is gone. Cost me 280€, but at least the annoying warning is gone. Thanks again for the help!