A common reason why an ELD CEL is thrown is due to a bad connection between the engine bay fuse box and the battery. This could be due to deteriorated cables, terminals, or battery posts. Seldom does the ELD sensor go bad, and if it does, there's probably a reason behind it.

If you end up buying that part from the dealership, remember they usually don't accept returns on electrical parts.

Try here:
http://www.harecycling.com/