![Check Emission System for 2012 Civic came on when driving on Highway. I noticed that my fuel economy indicators on my dash only show blue now when driving for poor mpg (red Check Emission System for 2012 Civic came on when driving on Highway. I noticed that my fuel economy indicators on my dash only show blue now when driving for poor mpg (red](https://i.redd.it/check-emission-system-for-2012-civic-came-on-when-driving-v0-dwvvd81ll7z91.jpg?width=3024&format=pjpg&auto=webp&s=1d282128cfff7194feff52968277896b4c519373)
Check Emission System for 2012 Civic came on when driving on Highway. I noticed that my fuel economy indicators on my dash only show blue now when driving for poor mpg (red
![18 Civic Si | Lights: Brake System | Power Sterring | Hill Assist | Stability Assist | Emissions : r/CivicSi 18 Civic Si | Lights: Brake System | Power Sterring | Hill Assist | Stability Assist | Emissions : r/CivicSi](https://external-preview.redd.it/18-civic-si-lights-brake-system-power-sterring-hill-assist-v0-Zm5nejBiYjB0bjdiMeExR2fw13V6-xZGOl_UImM515nkItxXUQgqOUrNst1u.png?width=640&crop=smart&format=pjpg&auto=webp&s=26c36d3801ecfa5e3136c576e1bfc540ed895abf)
18 Civic Si | Lights: Brake System | Power Sterring | Hill Assist | Stability Assist | Emissions : r/CivicSi
CTR Rev Matching and Emissions Issues w/Check Engine light. | Page 37 | 2016+ Honda Civic Forum (10th Gen) - Type R Forum, Si Forum - CivicX.com
![Tech Tip: Honda OBD II emissions monitor status readiness code checking using the instrument cluster | Vehicle Service Pros Tech Tip: Honda OBD II emissions monitor status readiness code checking using the instrument cluster | Vehicle Service Pros](https://img.vehicleservicepros.com/files/base/cygnus/vspc/image/2019/05/1.5cdadd7c0345e.png?auto=format,compress&fit=max&q=45&w=950)