Radio/CD SHOWING err-3 after I replaced my battery what can I do to fix it?

What's the error code ? You need a four digit code to enter into the radio . On your old one had the battery been disconnected or replaced in the vehicle

Nobody is supposed to have the complete database of codes, only authorised dealers. As a security measure, any time the battery is disconnected, the radio is Locked Out, and will not function until the security code is entered on the radio itself. Furthermore, after 3 tries, it wont even accept the code on the radio display, showing the ERR condition. Check for a sticker with the radio code inside the glove box. Some dealers fixed a second sticker in the owners manual. If not available, get the code from a Honda dealer, and be prepared to show VIN number, and proof of vehicle ownership.When you get hold of the code, disconnect the battery for 15 min. This will erase the ERR condition, and allow you to introduce the reactivation code.

As a security measure, any time the battery is disconnected, the radio is Locked Out, and will not function until the security code is entered on the radio itself. Furthermore, after 3 tries, it wont even accept the code on the radio display, showing the ERR condition. Check for a sticker with the radio code inside the glove box. Some dealers fixed a second sticker in the owners manual. If not available, get the code from a Honda dealer, and be prepared to show VIN number, and proof of vehicle ownership.When you get hold of the code, disconnect the battery for 15 min. This will erase the ERR condition, and allow you to introduce the reactivation code.

As a security measure, any time the battery is disconnected, the radio is Locked Out, and will not function until the security code is entered on the radio itself. Furthermore, after 3 tries, it wont even accept the code on the radio display, showing the ERR condition. Check for a sticker with the radio code inside the glove box. Some dealers fixed a second sticker in the owners manual. If not available, get the code from a Honda dealer, and be prepared to show VIN number, and proof of vehicle ownership.When you get hold of the code, disconnect the battery for 15 min. This will erase the ERR condition, and allow you to introduce the reactivation code.

Remove the fuse to your radio or disconnect the battery for 1 min, once reconnected. This should reset the radio again, if it does not reset the radio. Your going to have get your radio re-booted at the dealer if it's a soft wear issue and if it's a mechanical issue. The Tech2 scanner will indicate that when trying to re boot the radio.
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Unplug the radio or unplug your car battery for a few secs to start over.

Sometimes disconnecting the battery for a few minutes,long enough to lose your presets for the radio stations, might reset the cd player.But it might be jamed or broken which would need replacement

You need a seperate code for the CD player when it shows ERR... if you do not have this in your documents then you can get it for £5 from this link: Car radio codes in Uxbridge London Gumtree

Replace the radio head unit.

turn key to <acc> turn radio will blink err. leave on for at least half hour.err will be replaced by enter code.