Possible head gasket issue

I have a 08 aveo lt (automatic) with 90k miles. My wife was driving it and she saw a small plume of white smoke out the tail pipe and car lost power. She limped it to the nearest parking lot and i had to drive it 1/4 mile to tow it home. While i was driving, i had to shift the gears myself (automatic trans) to get it moving. CEL was flashing, there was not white smoke at all, and the car was not overheating. I has been sitting in the driveway for 3 days. I went to take it apart and i drove it up the ramps. The car idles normal, no CEL, no smoke of any kind. The codes it was throwing previously were p0300, p0340, p0302, p0303, p0113. I drove it down the road like a bat out of hell. Car runs just fine now, What does it sound like my issue was/ is? Thanks

Looks like a bad IAT (p0113) and/or bad camshaft position sensor (p0340). The rest of the codes are misfires mostly due to the bad camshaft position sensor signal. Both are easy fixes.