Dalton and everyone, thank you for your patience with me.

I went and tried to get the fault code. I tried several times with varying durations from 2 sec to 10 secs. No luck. On repeated attempts (and some playing with it) and after some time it flashed 13 times. I turned the key off and back on and tried again. No luck. When I started the engine, the CEL is no longer on. It is back to normal behavior. Did I reset it by chance?