macbook air headphone jack Problem Only Left Works

I Have A MacBook Air MMGF2HN/A Model Running On MacOS Sierra 10.12,One Day I Putted My Woofer Jack Into My Mac,After That When I Plugged My Sony MDRZX110 Headphone Into The Jack,The Sound Is Coming Only From The Left Side ,I've Checked The Headphone In My iPhone And It Works Flawlessly.So Is This A Big Problem As I've Checked All The Things Like PRAM,SMC,Sound Balance Etc..Please Help Me With This