Cadillac: OBD II Code

I got a P0125 Closed Loop Fuel Control Insufficient Coolant
Temperature code on the 2000 Cadillac Seville. It is my wife's car
and I do not know the conditions under which she was driving when it
came on. I double-checked the gas cap. Cleared the code and it has
not come back ... yet. Any ideas?

What's a water manifold? Gees...
"Blue C5" <com> wrote in message
news:googlegroups.com...
On Feb 17, 8:53 am, Blue C5 <com> wrote: 

Here's what it is - a leaking gaskets on the water manifold, and a bad
thermostat. They are recommending new water pump as well because it
has to come out anyway. 6 hrs labor - $570 in parts. Sure wish it
was the gas cap.