2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 98Get this manual
Fuel Injection System Code 43Engine Temperature Above Expected Range Setting Conditions: RPM is greater than 800 AND engine tempis greater than 110 CWhat To Look For: Damaged tempsensorDamaged circuit or wiresObstructed or plugged cooling hoses andor pump assemblyLeaking cooling passage inside of engine
Code 44Barometric Pressure Sensor Circuit Malfunction Setting Conditions: 10 countsRPM is greater than 800 AND BARO ADC counts are greater than 1010 or less than
What To Look For: Plugged sensor hose located on underside of EMMMalfunctioning EMMIf tube is not plugged, EMM replacement is required
Code 45Barometric Pressure Sensor Below Expected Range
Setting Conditions: RPM is greater than 800 AND BARO pressure is below 55 kPAWhat To Look For: Plugged sensor hose located on underside of EMMMalfunctioning EMMIf code 44 is also set, the sensor is damaged