That is exactly right about it being the ebox at the firewall. I have the same is but it's a faulty reading on mine but I am sure it'll go out on the 1st day we hit an air temp of 60c...

1 check the power to the fan and 2 check for the automotive type of dust bunny in the fan box.

I have an 05 4.8iS so I'm sure you'll see my tears here and there on the posts (like yesterday)[emoji28]

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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course