Can you calibrate the TPS system?

I'm finding the TPS values are running about 2-3 psi lower than manual gage readings. I used two tire pressure gages and they both agree. So after setting the tires at 30 psi, I then re-initialized the system by pressing the button and waiting for the 3 blinks of the light. Still the values are 2-3 psi too low. Do other folks notice the TPS/gage difference?

 

The Pressures are pretty consistent between my Gauge and what the Truck says.

 

I'm not sure if there is a way to calibrate these. I have found my TPS to be pretty accurate, compared with two different tire pressure gauges that I have confidence in.

 

I find my TPS about 3-4 psi lower than gauges- I tried several.

 

It is possible your two gauges could be off! Have you ever had them calibrated?

 

The two gauges agree. One is a dial and the other a stick so my guess is they're good. I could try a third one but mu guess is the TPS system is off. I should check to see if all 4 sensors are off the same amount.