Thats normally a misfire code!! You should get that scanned!! LOL!!not only do i have it on, but sometimes it flashes!!!
As for mine...its off for the time being...but it was on shortly before I voted!! LOL!! Shes all better now one of my spark plug wires went out and was causing her to misfire!! Which is not fun when its doing it on a major freeway and doesnt like to get up to speed for like 10 minutes LOL!!