Quote Originally Posted by Top_Fuel View Post
So the C1900 code is set if you have an unregistered sensor, but is that code being stored...or is it generated every time the car starts and the TPMS system goes through its self-test? Based on everyone's experience, it sure looks like this code will clear automatically once you install the registered sensors back on the car (like your flat tire example).
If one could Select "4tires ID Reg. (Change tire PRS.)" then this would work great. How is this done?