What information do you need?
Are you receiving the check tire pressure or the service tire monitor message? If your tire pressures are above approx. 25-26 psi, at the time the message is displayed, it is most likely a sensor malfunction.
If you are getting the service tire monitor message, the system has determined there is a problem with or between the PCM, BCM, IPC and remote door lock actuator module (the module that receives the signals from the sensors).
The sensors are rolls switches that close from centrifugal force caused by the rolling wheel. So, with the wheel rolling, they send a signal every 60 seconds. If the vehicle is stationary for a specified period of time, the switches open, and then they will only send a signal every 60 minutes to conserve the sensors batteries.