Josh Cunno

Hey guys, I recently bought an R34 and it has had its engine light on since I bought it, ive checked the code and it comes up with error code 14 which is the vehicle speed sensor. I have read a few other forums and ive heard that If the previous owner was a smoker there is a chance it is clogged up? If I clear the codes the come on randomly again while driving, and there are no other error codes. Someone help?