Running a low tank of gas isn't good in cold weather.

I just threw ECU code 90, or what I think is 90 (I can't tell if it's 9 or 90, but w/e) Which as far as I know is a problem with the evaporation devices in the gas tank.. or at least thats what I think the evaporative emissions control system is....


I went to fill up and my cap seemed to not be tightened correctly, I wonder if that could have done it...

 

If it's a newer car than could be the cap....

 

probably. tighten it, clear the code and wait.

 

Even I know you gotsta make it click three times... well, on Hondas anyway.

In my old ass car, I could drive around with out a gas cap all day if I wanted to. ECU wouldn't even know, let alone give a shit

 

90 is either p1456 = gas cap, or p1457 = EVAP control system leak

my car just threw a 90 again after i reset it last week.

im thinking its 1457 this time.