The Best 02 Subaru Rough Idle No Check Engine Light References. Web if the oxygen sensor is faulty or has failed in impreza, it can cause the ecm to receive inaccurate readings, which can result in the check engine light being triggered. Web the most common cause of a subaru check engine light being on with the cruise control light flashing is a loose or missing fuel cap.

Web i opened the hood and at idle, the engine looks like it's bouncing around in there like the mounts are made of jello. Tighten or replace the gas cap. (misfire cylinder 4) it popped the code taking off from a stop light.





