CD Player has E23 Code

My CD player worked one day and then the next it gives me an E23 code. I pulled the fuses and disconnected the battery cable to try to remedy this, but it didn't work. Any suggestions?

it is probably an internal problem, my unit does the same thing when it has a problem loading the cd, if its under warranty, take it to the dealer, if not try ebay motors for a replacement because the dealer will probably charge a fortune for repair and a new unit from the dealer is about $500.