2000 Rx 300, With 85007 Miles -- Error Code P0115

[MTOM01]

My RX 300 with ran about 30 miles this morning, we had heavy rain today, in the PM I cranked it up, it ran at very low idle speed and then died off, I tried it couple of times and engine starts as if its half dead & the check engine light came on. I neved had this error code before, adn the RX was runnig ngreat so far.

I used a OBD II scanner and I got the error code P0115 - Engine coolant temp circuit malfunction.

It's still raining adn I did not pop the hood up.

How do I fix this. I tried to search the forums but have no luck in finding anything usefull to me, or I was unsuccessfull in searching.

Can anyone point me to the thread if this topic was discussed & resolved before, or suggest some tips to get this thing to work.

Thanks.

[code58]

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MT- Go here and see if you can't get some ideas. Good Luck! http://www.obd-codes.com/p0115