if i have income less than 2.5lakh and are not required to file return only i have filed 15g with bank can i get jnto problem if Aadhar is not linked with pan
There is no problem. if u have filed 15g form, bank will not deduct TDS. Hence, there will be no need to file ITR to claim any sort of refund since there is no tax deducted. You will not get into any sort of trouble.
But in case you already have an e-filing account and have been filing ITRs in preceding years it is preferable to link Aadhar with PAN and file the return for AY 18-19 as well.