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Code P0128

Tiny
BOBBY85
  • MEMBER
  • 2005 FORD ESCAPE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 220,000 MILES
Engine not reaching its operating temperature. The radiator fan runs as soon as I start the car and stays on. I replaced the thermostat and sealed a leak in the cooling system. The error comes back on. The next thing I thought of was the coolant temperature sensor but that one seems to be fairly new, probably replaced by previous owner. The only thing left I can think off is the cylinder temperature sensor. Any other suggestions?
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Tuesday, January 14th, 2020 AT 5:28 PM

3 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

Please answer the question that is in the diagrams down below and get back to us with the answer and we will go from there.

Thanks,
Alex
2CarPros
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Tuesday, January 14th, 2020 AT 8:54 PM
Tiny
BOBBY85
  • MEMBER
  • 2 POSTS
Sorry, I cannot see any questions in the diagram. What is the question?
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Thursday, January 16th, 2020 AT 5:42 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Does your vehicle have a Cylinder Head Temperature sensor[CHT] or a Engine Coolant Temperature sensor[ECT] or does it have both?

Thanks,
Alex
2CarPros
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Thursday, January 16th, 2020 AT 10:04 AM

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