1. Log in to your Citibank online banking account.
2. Go to the "Services" or "Card Services" section.
3. Select "Change PIN" or "Reset PIN."
4. Enter your new PIN and confirm it.
5. Verify your identity through OTP sent to your registered mobile number or answer security questions.
6. Follow the prompts to complete the process.
If you need assistance, contact Citibank Password Reset number at 1-888-388-4751. They can guide you through the process of resetting your debit card PIN.