A buddy of mine has an 04 TL that had the Mil come on last night. When I jumped the connector on the drivers side dash to pull the code, we got 15 long flashes and 3 short. I know there's no code 153 from mil flashes. There were no pauses to separate 2 different codes. Any ideas? I have a feeling it's for a random misfire. He said it cold started pretty rough last night.

Thanks in advance!

 

If you can, take it somewhere that scans for those codes for free.