2011 F150

I was getting a Tire Pressure Sensor Fault so I grabbed a sensor and that gray programmer with the green button. Sensor description said Ford 315Mhz, so it should work. I brought the tire to my local tire shop and had them pop it in. The guy said he “activated” it with his device, I would just need to learn it to the truck. I put the truck in TPSM learn mode, got a horn chirp on all the old ones, but not the new one. But here’s the thing - the Tire Pressure Fault went away, but now I’m getting the Low Tire Pressure warning instead. So it’s recognizing the new sensor, but not the pressure. And yes, all tires are set to the correct PSI. My first thought was that if I didn’t get the horn chirp that it wouldn’t recognize the new sensor. But it does because the Tire Sensor Fault is gone, its now just saying that the PSI is low - which it’s not. Any ideas?

 

Just a thought, on my wife's 2019 Fusion I got a low tire warning.
When I brought the tire back up to the proper pressure the warning stayed on.
I had to go about 5 psi higher to reset the sensor and then bleed air off to get back to recommended pressure.

 

I tried that. Didn’t work, but thanks for the suggestion.