2003 Code P0125 Coolant Temperature | Ford Thunderbird forum club group 1955-2005 models

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2003 Code P0125 Coolant Temperature

The Thermostat Monitor is designed to verify proper thermostat operation. This monitor was phased in on certain applications beginning with the 2000 model year and replaces the original "Insufficient temperature for closed-loop test" (Diagnostic Trouble Code (DTC) P0125). This monitor is executed once per drive cycle and has a monitor run duration of 300-800 seconds. If a malfunction is indicated by the thermostat monitor a diagnostic trouble code P0125 will be set, and the malfunction indicator lamp will be illuminated.

If the thermostat is stuck open, you will not see any overheating with fault P0125.

doug7740
1955 Thunderbird Blue

P0125 2.jpg
 
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HNDOGOD said:
Got a error code P0125 yesterday with check engine light...
Not seeing any overheating or other issues...2002 Tbird
Any suggestions ?
Click to expand...
Get a BlueDriver OBDII reader, it will not only read the code, but also suggest a fix. Our 2004 Jeep did this when the theromostat got stuck open. Since the thermostat will not close, the coolant does not heat up as expected. Many people ignore this issue, however when I researched, it can lead to other problems so you definately want to fix it. A mechanic can verify the issue as well.



2002-2005 Thermostat-
Purchase Link- https://www.amazon.com/s?tag=thunderbirdforum-20
 
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