My mechanic and I set the ignition timing with a timing light yesterday. I saw the faint red color and though I pretty much had it lined up TDC. Drove it home no problems, today check engine light come on the scares me because I'm about 40 miles away from home. Got it home but what could the problem be? (d15b2 civic sedan automatic)

For the code 16 I got a new main relay, two days ago, I haven't reset my ECU yet though.

 

^bump

 

^fixed, it was the dizzi tdc sensor. Replaced the dizzy and reset ECU both codes are gone.