In a vehicle equipped with a diesel particulate filter, particulate matter (PM) is created during the combustion process and captured in the vehicle's exhaust system by the diesel particulate filter. Particulate Matter Sensor helps detect leakage in the diesel particulate filter to meet system diagnostic standards. By adsorption of PM on ceramic carrier, conduction current changes and PM sensor monitors the current and sends to ECM. The ceramic carriers are regenerated by periodic heating.