can anyone help me out with these codes for a P38 gems, truck was running fine got off the highway and got a sel & cel . had to stop at autozone to get it read they came back as acuara and bmw codes.

thanks

ps feels like a dead cylinder

 

P1313 is Catalyst damaging misfire bank 1 (but no specific cylinder)

P1316 is emissions relevant misfire (again, general code, not specific)

I would doubt a single dead cylinder, and be looking at something more global... O2 sensor, coolant on plug wires, fuel pressure loss.

 

got home, shut it off; sure enough plug wire came off the coil.
stuck it back on restarted runs fine.
will the sel & cel clear themselves?