hey guys i have a b16a1 in my 1990 civic HB and i'm getting an ecu code 12. but yet the engine check light doesn't come on.. then again from time to time it comes on and when i turn my car off and on it goes away. Also i have a leak in my Vtec cylinoid. Do you thinik that it might be a gasket or something. I have no clue what the ecu code means can someone help me. I have a PR3 ecu. thanks.

 

http://hybrid2.honda-perf.org/tech/codes.html

code 12: EGR lift sensor