Thought of the day.

Check your spare if you have one.

Had that happen in my truck once, system could not tell which tire was low, did the same check of pressure on all four corners, they were all good.

Stuck my head under the truck, topped off the spare, and voila'..... TPMS indicator went out.
 
That tire looks visibly low but after all 4 have good air, if light still on, sensors can be re-trained with calibrator tool at dealership.
Barring that, slight possibility that one or more sensor(s) has gone bad. Damaged.
If they can’t re-train, they will be able to tell which is malfunctioning.
On valve mounted sensors anyway.
You have the old strap mounted sensors in there.
We don’t see or deal with those much anymore.
But I think the calibrator tool can still tell if one is faulty.
 
That tire looks visibly low but after all 4 have good air, if light still on, sensors can be re-trained with calibrator tool at dealership.
Barring that, slight possibility that one or more sensor(s) has gone bad. Damaged.
If they can’t re-train, they will be able to tell which is malfunctioning.
On valve mounted sensors anyway.
You have the old strap mounted sensors in there.
We don’t see or deal with those much anymore.
But I think the calibrator tool can still tell if one is faulty.
They are the strap type. the dealer knock one of wheel when I got the last tires put on. When I get the air bags changed out I'll have them check the sensors.
 
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