Possible causes – Leaking or stuck open thermostat– Low engine coolant level– Insufficient warm up time– Faulty engine coolant temperature sensor– Engine coolant temperature sensor harness is open or shorted– Engine coolant temperature sensor circuit poor electrical connection Tech description There is a service bulletin for the following Mazda models: 2004-2005 Mazda3 vehicles2006-2007 Mazda5 vehiclesMazda…