Use HDFC Bank NetBanking and log in
Go to Credit Cards
Select your credit card
Choose PIN Change or Generate PIN
Enter the OTP sent to your registered mobile number
Set your new credit card PIN
Confirm the PIN change
Use the HDFC Bank MobileBanking app
Log in to the app
Open Credit Cards
Select your card
Tap Change PIN or Set PIN
Verify with OTP
Create and confirm your new PIN
Use an HDFC Bank ATM
Insert your credit card
Select PIN Generation or Change PIN
Enter the OTP or verification details if prompted
Set your new PIN
Call HDFC Bank customer care
Request PIN reset or PIN generation
Complete the required verification
Follow the instructions provided by the bank
Visit an HDFC Bank branch
Carry valid ID and your credit card
Request a PIN change
Complete the required verification
Set your new PIN as instructed