* Low tire pressure: One or more tires are below the recommended pressure.
* TPMS sensor malfunction: A sensor in one or more tires might be faulty, not transmitting data correctly.
* Tire pressure loss: The system might be detecting slow leakage in a tire.
You should immediately check the tire pressures in all four tires (including the spare) using a reliable gauge. If a tire is low, inflate it to the recommended pressure (found on a sticker usually located on the driver's side doorjamb or in the owner's manual). If the warning light remains on after inflating, you'll need to have your vehicle checked by a mechanic to diagnose the problem—likely a faulty sensor.
