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Were is the coolant sensor on the 2006 ford fusion my engine light keeps popping on and I have checked for codes and it tells me a PO 128 code. were would this be located

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  • Ford Master
  • 3,480 Answers

I found this location for 2.3L
Two wire connector and you can see wire colors. I didn't know the question has already been answered. I had already looked up the info, I figured I might as well post it. I wasn't sure of engine liter size?

were is the coolant sensor on the 2006 ford fusion - coolant-sensor-2006-ford-fusion-engine-osju3jyrnymnvvv3fl51m10w-1-0.jpg

Posted on Dec 04, 2016

  • Noel Flavion
    Noel Flavion Dec 04, 2016

    Thank you that helps a lot never used this before sure helps out big time

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  • Ford Master
  • 4,134 Answers

The code means that the ECM detects that the engine coolant is not getting hot enough, fast enough.

There are two reasons this code can set. First, and most common, is a defective thermostat which is stuck open or opening too soon.
The second is the coolant sensor itself or its associated wiring could be faulty.
The car is 11 model years old. If you have never changed the thermostat, now is the time. If that fails, then try to replace the sensor. Both are usually located in the same general area, since the coolant temperature must be monitored near the thermostat for the most accurate results.

Posted on Dec 04, 2016

Testimonial: "so if the coolant is full and I have heat and my temp gauge is normal you still recommend changing the thermostat before the sensor"

  • 2 more comments 
  • Noel Flavion
    Noel Flavion Dec 04, 2016

    "so if the coolant is full and I have heat and my temp gauge is normal you still recommend changing the thermostat before the sensor"

  • Terry Hair Dec 04, 2016

    Actually, yes. The reason is that if your temp gauge reads correctly (and I am going on you assertion it is), then the coolant sensor is working properly to detect engine coolant temperature. What could be occurring is that you may have a thermostat stuck in the partially open or fully open position. This will cause the engine coolant to come up to operating temperature at a much slower rate than normal and that will set the code. You would still get to operating temperature eventually, and even have heat, but the ECM is an impatient
    little git and wants it faster than that. Typically, when in-town driving, an engine should come up to temperature within 2-3 minutes of driving. It can take twice that at idle. If it takes longer than that, you may have a t-stat issue.

  • Noel Flavion
    Noel Flavion Dec 04, 2016

    Thanks this web site sure helps me out big time

  • Noel Flavion
    Noel Flavion Dec 04, 2016

    Thank you that would make sense then I appreciate it . This sure helps me out I will try that then

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1 Answer

I have 4 codes that came up on my 2005Chevy impala, PO 128,PO336,PO38,and PO 386can anyone tell what these are?


P0038 - HO2S Heater Control Circuit High Bank 1 Sensor 2
P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
P0336 - Crankshaft Position Sensor Circuit A Range/Performance
P0386 - CKP Sensor B Circuit Performance.
your most likely need to replace the crankshaft sensor and probably will take care of the 0336 and 0338 codes.
you then need to check your coolant level, if low fill and look for leaks, if not low, most likely replacing the thermostat will correct other two codes

Oct 17, 2015 | Cars & Trucks

1 Answer

My 2006 ford fusion shakes or misfires around the speeds of 20 40 and 60 mph. I got all 6 coils changed the fuel injected cleaned and transmission oil changed. My engine light come on when it shakes...


I'm sorry to hear that. Did he tell you what codes were in it? Do you live near a autozone or somewhere they can check the codes for free. Or maybe you can call the person up and ask what codes are in the car. But it sounds like you are having a miss fire problem. If the check engine light is flashing it is not a good idea to drive it. Try to get the codes and post them please.

Mar 18, 2015 | 2006 Ford Fusion

1 Answer

2006 check engine light code 128


http://www.moddedmustangs.com/forums/5-0-mustangs/49335-mustang-eec-iv-diagnostic-codes.html try this website it has a few fault codes

Dec 18, 2011 | Ford Mustang Cars & Trucks

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Hi, I have a 2003 Ford Expedition. The code reader gave a code of P0128. It pop up every once in a while especially in raint weather. How do I fix the problem?


it's for coolant below regualted temperature. You have a cylinder head temp sesnor and ECT, engine coolant temp senor. May be a bad thermostat.

Jan 21, 2011 | 2006 Ford Fusion

2 Answers

What is error code P0128 on 2006 Ford Fusion SE, 4 cyl, auto


P0128 is the fault code to check 1.the coolant level 2. thermostat defective 3. ECT (engine coolant temperature) sensor defective

Nov 13, 2010 | 2006 Ford Fusion

1 Answer

Getting codes PO431, PO421, PO128


2003 saturn vue, we dont have the engine size, the codes should be and are the same, po 128 means; cooling temp is out of spec, make sure the coolant is full, then replace the coolant emp sensor and make sure the connection is good, i would also replace the thermostant, this is a common code on these and most of the time its the coolant temp sensor or thermostant, ive learned to replace then both to avoid future engine lights with code po128. next we will check the code # po421, this code is that the computer sees that the cat converters are taking to long to warm up, code po 431 is also the same as po421, this code is related to the thermostant and sensor, the sensor give the computer the wrong temp readings and then the compuetr thinks the engine is hotter than it is and thinks the converters should be also hot like the motor but the coolant temp is giving a false reading, if you replace the coolant temp sensor and the thermostant and fill coolant , then reset the light and you will solve the problem, i hope this is helpful, also the sensor is located to the right of the engine if you are standing in front of the motor, heres a picture of the sensor, remember to check connector heres a pic of the connector, good luck.johnjohn2_20.jpg

Nov 10, 2010 | 2003 Saturn VUE

1 Answer

I have a 2006 ford fusion, yesterday the check engine light came on as I was driving at highway speed...I went to auto zone and the code read as 128 "coolant temp is always low". The coolant...


the part store you went to can clear the code
however, being LOW in coolant will cause over temp
you concern is probably a defective thermostat or defective CHT

Nov 01, 2010 | 2006 Ford Fusion

2 Answers

How do you fix a P0128 code on a 2006 Ford Fusion?


Upstream HO2S Sensors Swapped or this one
P0128....Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) now if this a 2006 model built for the europeon market then your code reader is a waste of time as it will never read the correct codes and if your really lucky it could lock up the immobilisor as well this is to prevent general garages from doing any repairs so just take it back to a ford garage

Jul 30, 2010 | 2006 Ford Fusion

1 Answer

My 2006 ford fusion check engine light is on and


P0882 - TCM Power Input Signal Low, this is a transmission code, I recommend that you take it to a dealer or qualified transmission shop. Hope this helps.

Jul 05, 2010 | 2006 Ford Fusion

1 Answer

Service soon engine light is on and it wont go off.


Did you have the computer checked to see what code or codes come up? If not and you have an Advanced Auto store near by they check computer codes for free. They hook up their code reader and it shows the code or codes and lists what the code means.

Jul 23, 2009 | 2006 Ford Fusion

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