I file my return using wrong year w2, what should I do to correct it

[bluedeb · Accepted solution]

You need to amend your return if your original return has been fully processed (received refund or payment withdrawn).  The IRS gets copies of all W-2's so they might catch you used the wrong W-2. Amended returns must be mailed. 

How to amend (change or correct) a return you already filed

https://ttlc.intuit.com/replies/3288565