Ok. So I've pretty much read all of the threads on these codes at this point. I had a blown head gasket. And there was significant coolant in cylinder 2, so much so that I was getting really bad misfires on startup. On one rough startup, I got the p0aa6 and c1310 codes and the car turned off. I wrote down the codes, cleared them, restarted the car and they didn't come back on and everything was fine. When I looked the codes up afterwards I realized that the detail codes were important. Used Kseal and the head gasket leak is fixed. Fast forward 2 weeks, and the codes reappeared on startup. I got a detail code of 526 and cleared them again. Realized that I need the 2nd code afterwards. So here's my issue. The code is so intermittent. So until the code reappears and I can get the 600 code, is there anything that jumps out at anyone that I can check without the meg? And being it is so intermittent, how will I know it is even repaired? Summary: Here's what I know... -Codes appear only on startup. -Codes initially started after rough misfire. -Coolant overflow tank was overflowing frequently from bad head gasket and coolant frequently got splashed around front of engine from various drain, refill, gushing out radiator neck, overflow tank, etc. -Battery meter is looking normal while driving. Also, my MPG is higher than normal (averaging around 53mpg, where it has usually been around 47) -From what I've read, this is most looking like a 614 code as there is no issue while shifting or the air conditioning. Hoping to start troubleshooting before the code pops up again.
