P128A – FORD

Code : P128A
Make : FORD
Description : P128A FORD Cylinder Head Temperature Sensor Circuit Intermittent/Erratic
Possible causes :
– Wrong thermostat
– Not at operating range
– Engine overheated
– Low engine coolant level
– Faulty Cylinder Head Temperature (CHT) sensor
– Cylinder Head Temperature (CHT) sensor harness is open or shorted
– Cylinder Head Temperature (CHT) sensor circuit poor el
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.

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