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