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Hello, It sounds like your thermostat is opening to soon. This happens a lot on Ford where the engine is operating at 170 degrees instead of 190. This is enough to set a code or codes for thermostat or incorrect engine temperature.
It's rare the temp sensors go out. 99% of the time it's the thermostat.
Thermostats can fail in different ways. They can stick closed and cause the vehicle to over heat. They can stick open so the vehicle won't warm up. Newer vehicle the spring weakens and the thermostat open soon than it should. When this happens you can still have heat but doesn't mean the vehicle is operating at optimal temperature. That is why a code sets because it can affect engine performance.
Hello, am I still able to offer you assistance.