To resolve the issue of not receiving the Facebook reset password code, follow these detailed steps:

1. Check Your Contact Information: Start by ensuring that the email address or phone number associated with your Facebook account is correct. If there's any mistake, you won't receive the reset code. If you suspect it's incorrect, go to the login page, click on "Forgotten password?", and follow the prompts to verify or update this information - learn more.

2. Check Your Spam/Junk Folder: Sometimes, the reset email might end up in your spam or junk mail folder. Open your email client and check these folders for any emails from Facebook. If you find the email, mark it as "Not Spam" to ensure future communications don't get lost - learn more - learn more.

3. Request the Code Again: If you didn’t receive the code after checking your information and spam folder, try requesting a password reset again. After clicking "Forgotten password?" and entering your information, select the option to send a new code. Ensure you choose the correct method (email/phone) to receive the code - learn more.

4. Check Your Internet Connection: A poor internet connection may prevent you from receiving the code in a timely manner. Make sure you have a stable connection when you request the reset code - learn more.

5. Disable Any Filters/Rules: If you have set up filters or rules in your email that might redirect Facebook messages, temporarily disable them. This will help ensure that the reset code reaches your inbox - learn more.

6. Use a Different Device or Browser: If the issue persists, try accessing your Facebook account via a different device or web browser. This might help in getting the code delivered - learn more.

7. Wait and Retry: If you have reached a limit on the number of times you can request a reset code (this is typical to prevent abuse), wait for 24 hours before trying again - learn more.

8. Contact Facebook Support: If none of the above steps work, consider reaching out to Facebook support for further assistance. They might provide specific solutions based on your account situation - learn more.

By following these steps, you should be able to resolve the issue of not receiving your Facebook reset password code effectively.