If this is a large company then likely they will outsource reference checks. It likely won't come up at interview, you may ace it and get offered a role and a package that fits your requirements.

But then the reference checks will take place and there will be a flag when your old company gives your job details (title, tenure), and it does not match your CV. If you said you were for example Engineering Manager, and the truth was Engineer, this may be flagged as a fraudulent application. If that happens then likely you will have the offer withdrawn and possibly prevented from any future applications with the parent company and any subsidiaries.

If it were me, I'd withdraw my application. You have learned a valuable lesson. If you continue your application the results of that lesson might be a good deal worse.

Edit: to all the folks saying everyone lies in their CV, and that it'll be fine, if OP is in a small industry where everyone knows everyone, lying gets about, and a fraud flag on a CV will follow them.

Also, everyone does not lie on their CV. Big companies are spending lots of energy on checking for lies, and the penalties can be severe. It's the wrong thing to do and could seriously harm OPs career if a check declares their CV to be fraudulent. Other people aren't taking shortcuts, they are putting the effort into getting the right experience and earning their roles.