P0454 MAZDA EVAP Pressure Sensor/Switch Intermittent

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 When is the obd code mean? An intermittent voltage signal from EVAP control system pressure sensor is sent to Engine Control Module (ECM). Symptoms…