Last week my battery half died (I was able to wait and it started again after a few hours without being jumped). Since then, my CEL came on. I tried to check the code using the chart at http://www.c-speedracing.com/faq/06.php but no code was being thrown - i.e., it didn't blink at all. The CEL was just steady the whole time.

Has anyone seen this before? Know what the cause/resolution is?

Thanks

 

Did you try to just reset the ECU?

 

No, but I took it to the dealership and the code it threw was "Interal circut failure."

 

sounds bad.

 

Internal circuit failure.

I'm assuming that you have a 2000 GSR. I'm not familiar with this problem seeing that there was no initial check engine light code.

Is this problem related to the O2 sensors?
Did the dealer give you a code number to the check engine light?
What other info did they give you?

 

Your ecu is gone.