I had three possible things wrong, bad gas, bad lean o2 sensor (no bank called out) or manifold leak. I replaced the two lean o2 sensors which cost about $300. Light came on after about 100 miles. I would be nice if I had only one code. I guess I will take it in have someone look at it. I had alot of trouble with Germany cars, it cost a lot to keep them running. I have had great luck with American cars. Wish I had bought American.