E04 & the cd will not play

Mine did the same thing. My player was primarily used in the garage and the cold weather may have caused my player to do the same thing. I just fixed my player. I removed the top cover and looked at the CD in the play position. In the upper right corner from the CD, you will see a spindle motor with a belt on it. Gently spin the motor back and forth carefully with your finger. I rotated it a half-spin in either direction, careful not to dislodge the belt. When I turned the player back on, the mechanism operated as it normally would and began playing the disc. I was able to eject and reinsert the magazine without any issues, solving the problem. Hopefully that will work for you.

You will probably have to get a new copy of your disk, but there is one other option that is worth a try. If you can find a "CD Repair Kit", try running your disk through that and then see if it will play. A CD Repair kit uses a clear resin to fill in scratches on the surface of a disk, removing the reason that the disk will not play. It does not always work, but a CD repair kit is much cheaper than re-buying a game you have already spent money on. try this one:
http://www.google.com/products/catalog?hl=en&sugexp=ldymls&xhr=t&q=cd+repair+kit&cp=10&qe=Q0QgUmVwYWlyIA&qesig=xwNELoNXZWL51NsEp4qaDQ&pkc=AFgZ2tmN04my0ZH7YSJ8Bm2TbmKLmrTNSO4UralGK__lMqTX9gVtI2mRc3n9Qafuq5pUbu-BnQewzPJ-QN9PQ14ScYAY8N9Lhg&bav=on.2,or.r_gc.r_pw.&biw=1024&bih=650&um=1&ie=UTF-8&tbm=shop&cid=16739641775731144756&sa=X&ei=6wHfTc_VNIi_gQfCyczPCg&sqi=2&ved=0CDAQ8wIwAA
This should be able to help you repair your disk. The best part of buying this is that you can use it on any disks that you have that skip or do not play. It will not ALWAYS work, but it is worth a shot -- especially if you spent $50 or more on the disk in the first place.

You can't. The Laser will only Play +R & +RW.

Non-playable discs

• DVD-ROM • DVD-RAM • DVD-R • DVD-RW
• CD-R* • CD-ROM • PHOTO CD • CD-RW*

* Audio formatted CD-R and CD-RW can be played.

• Playing back discs list as "Non-playable discs" above may
generate noise and damage speakers.

It can't read disc, try another disc preferably factory bought recorded disc not computer MP3 version off computer

Simple fault would be your laser has had it & would need a replacement.
Or get a new Audio system altogether.

CD ERROR DISPLAYS
CD Changers
E01:
The disc magazine is not inserted in the cd changer
E02:
No disc is inserted in the disc magazine
E04:
The disc is dirty, or the disc is inserted into the disc magazine
upside down
E99 RESET PROCEDURE:
Remove CD magazine by pressing eject button on changer.
Remove all discs from magazine and re-load empty magazine into
changer. Using the Radio RESET CD system by pressing and
holding the “ON”/”POWER” button for about ten seconds, or in
earlier models the “EJECT/6” button.


FM/RF Remote Controls
E99 RESET PROCEDURE FOR REMOTES:
Remove disc magazine from changer by pressing eject button.
Remove all discs from magazine and re-load empty magazine into
changer. Press RESET button on interface unit
WAIT:
The temperature is exceeding more than 55c(130f) and the cd
changer cannot be operated. When the cd changer cools off, this
wait disappears. When the RESET button on the interface unit is
pressed, this WAIT appears for a few seconds


IF THESE ERROR CODES STILL KEEP APPEARING
CONTACT YOUR DEALER.

I have had similar problems in the past - on one computer discs burned using nero were unreliable but using Windows Media Player they were fine and on other computers the Windows programme was useless and produced unreliable inconsistent results.

I suggest you experiment with different burning software and maybe suspect the drive you are using might be past it's best.
I have several cd players in my vehicles and around my home. Only a couple of them will play all the discs and most of them are very choosy and will only read premium price shop bought discs and it is a waste of time trying to play a discount store or freebie disc, or many of my computer burned discs.

I don't know what the differences are - maybe it is the software or the power of the laser burning the disc or the sensitivity of the reading laser, but there are many differences in there somewhere. The situation is very frustrating...

Only one of two things. either a bad cartridge or your transport has given up. Slide open the cartridge door and look for a small inset dimple below the cartridge, it's a reset. push it with a ball point pen and hold for 3 seconds, the unit will reset. if you have another cartridge try it, if not, go to any car audio dealer that sells sony and see if you can try one of theirs to try. Also, these units are notorious for scratching CD's. If you have had the same discs in there for a while pull them out and observe the scratches in the discs. You can improve their ability to be played by using liquid car wax on the disc itself (just a dab is all it takes) and wipe clean with a microfiber towel. Hope this helps. If not, it needs to be serviced by a Sony service ctr. They will put a new transport in it. $100-$150 repair.

E-04: Disc is dirty, upside down or unreadable.

your cdplayer is probably at intro