Ok, the only thing between the DME module (Digital Motor Electronics) and the fuse is the Characteristic Map Cooling Thermostat. If you had a problem with the module or the fuse, it would throw a different code. But, it knows it's there and operating, just operating incorrectly. This leads right to the electrically heated thermostat.
I'd say go ahead and change the thermostat. Just make sure you get the whole assembly including the heated probe and everything. I'm not sure how they sell it. And if it makes you feel any better, I'm basing all this on the factory wiring diagrams and service manual.
Let me know how it goes.
Officer: "I see you set the table for four."
Groucho Marx: "That's nothing--I set my alarm clock for eight."
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