Possible causes – Faulty Evaporative Emission System (EVAP) Pressure sensor– Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted– Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection Tech description The P0452 Codes is most common with the Nissan Sentra, Nissan 350Z and Nissan Frontier. If there are no loose or broken…