Code : P0128
Make : 2009_FORD_FUSION
Description : P0128 2009 FORD FUSION Coolant Thermostat
Possible causes :
– Low engine coolant level
– Faulty Engine Coolant Temperature (ECT) sensor or cylinder head temp (CHT) sensor
– Faulty engine coolant thermostat
– Engine Coolant Temperature (ECT) sensor or cylinder head temp (CHT) sensor harness is open or shorted
– Engine Co
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.