The quickest answer is to check the car’s original documentation for a 5-digit radio code. If that card or note is missing, you’ll need the radio’s serial number and help from a Honda dealer or authorized service to generate the code.
Where to look if you already have the code
If the code exists, it is usually printed on a small card or sticker that came with the vehicle’s manuals. Common places to check include the owner's manual, the glove box, the wallet-style code card, or dealer paperwork from when the car was purchased.
- Owner's manual code card
- Glove box or wallet card that accompanied the car
- Dealer or previous owner documentation
Finding the code lets you unlock the radio by following the input steps in the manual. Keep the code secure once you locate it.
What to do if you can’t locate the code
If the code isn’t in your paperwork, you’ll need to obtain the radio’s serial number and request the code from Honda or an authorized dealer. The steps below outline the typical path.
- Gather proof of ownership and the vehicle’s VIN (and a photo ID if required by the dealer).
- Turn the ignition to ON and power up the radio. If the display shows CODE, make a note of the digits shown.
- Display the radio serial number. On many Honda radios of this era, you can reveal the serial by turning the ignition to ON and pressing and holding the 1 and 6 preset buttons together for several seconds until the serial number appears on the display.
- Contact a Honda dealer or authorized service center with your VIN, proof of ownership, and the radio serial number. They will look up the corresponding 5-digit security code and provide it to you (some regions may charge a fee).
- Enter the code into the radio exactly as shown, using the preset buttons to input digits, then confirm to unlock.
Note: If the radio was replaced with an aftermarket unit or is not the original factory radio, the OEM Honda code may not apply. In such cases, you may need to work with the installer or consider reinstalling the original radio to regain full compatibility.
What you’ll need to take to the dealer or service center
To speed up verification and code retrieval, have these items ready when you visit or call.
- Vehicle Identification Number (VIN)
- Proof of ownership (title/registration) and a photo ID
- Radio serial number (revealed by the sequence described above)
- Owner’s manual or any documentation showing the original radio code, if available
Dealers may verify ownership in their system and may request additional details before providing the code.
Tips and cautions
Avoid guessing the code. Repeated incorrect attempts can lock the radio for a period of time, after which you’ll need to wait or return with correct information. If the stock radio can’t be unlocked after several attempts, a dealer or Honda support can help with unlocking or replacing the radio as needed.
Summary
For a Honda Odyssey 2006, start by checking the owner’s manual or code card for a 5-digit radio code. If that fails, retrieve the radio’s serial number using the standard button sequence and contact a Honda dealer or authorized service with your VIN and ownership documents. They will provide the correct code, after which you can unlock the radio and store the code securely for future use.