Yeah. It was about all I had to go on. I ran a search on the code on the HAN forum and all I found was the thread listing all the codes and their basic descriptions and a forum where some guy said it's probably a faulty ECM.

A search in Google turned up next to nothing 'cept for the ECM problem and my Haynes doesn't even list the code. I'm pretty much grasping at straws, now.

 

Finally got the chance to disconnect the negative battery cable and reset the light. I've started it and drove around about four times since and the light hasn't come back on yet. I guess I'll see how long it stays off.

Thanks for all the help - I guess if it comes back on pretty soon, start with the coolant temp sensor. If that doesn't fix it, though, then what?