beckym

I would greatly appreciate any thoughts or suggestions anyone might have.

I have a 2011 Subaru Forester, about 156,000 miles. Last year my CEL came on and the Subaru dealership found that the catalytic converter need to be replaced. Luckily my vehicle was a PZE model, so this was under warranty. That work has been done, but for the last 6 months or so my car will shake heavily while at stoplights or slowing down and the CEL will come on - solid light. The code it's throwing is almost always about misfire of spark plugs. Sometimes the light goes off before I can get to Subaru so they can't always read the code. I've had new spark plugs since June but today the shaking started back up again, and the solid CEL is on with a solid traction control light and flashing cruise control light. Any thoughts??