It may be that your tool does not have the required coverage for the vehicle you wish to work on. Against a background where new sensors are being continually being released, this may be because the tool has not been updated with the latest vehicles or TPMS sensors, so updating the tool is your first action.
If you are programming a universal replacement sensor it may be that the sensor does not cover the make, model and year of the sensor you are replacing. You should be able to establish this by searching on the tool.
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