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P0125 2001 f150 4.6

  

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A year or two ago I had a thermostat changed on my f150 because of the p0125 code. Now the code has come back. Do thermostats go bad that fast?

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Have you checked the other possible causes of that code?

https://www.carparts.com/blog/p0125-code-insufficient-coolant-temperature-for-closed-loop-fuel-control/

 

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