General LSX Automobile Discussion - Wow Really??

I go to chevron to pump gas of course 91 octane i fill up half a tank as I'm driving out of the gas station my check engine light comes on out of nowhere? But why i don't get it it doesn't make sense what could it be a sensor or what????? Help please thanks ls1tech

Is your gas cap screwed all the way on to where its clicking?

Is your gas cap screwed all the way on to where its clicking?

i just went to double check if i screwed it back in right but i think your right cause i don't remember screwing it like 3 times but i can't turn on my car to see if the check engine light will still be on my family is asleep my car is in the garage but still will wake them up its loud so I'm going to have to wait till morning ehh. But i didn't know that would cause a check engine light though?? Thanks for the help

Take it to autozone or oreillys and have the code scanned for free

i just went to double check if i screwed it back in right but i think your right cause i don't remember screwing it like 3 times but i can't turn on my car to see if the check engine light will still be on my family is asleep my car is in the garage but still will wake them up its loud so I'm going to have to wait till morning ehh. But i didn't know that would cause a check engine light though?? Thanks for the help

that certainly will cause a check engine light my friend

Gas cap 9 times out of 10 when you just fill up at a gas station. This is true for most cars on the road, not just ours.

Is your gas cap screwed all the way on to where its clicking?

Take it to autozone or oreillys and have the code scanned for free

Yes and yes. :nod:

My money is on the gas cap also. My gas was screwed in all the way and I would still get a SES light. It wound up being the cap itself was cracked I replaced it and I've never had a SES light again. Just something to look at OP.

I kept getting a code related to emissions, and I had no idea what was wrong. Buddy of mine looked at my gas cap and the rubber seal on it was dry rotted. Replaced the seal and haven't gotten the code since.

Take it to autozone or oreillys and have the code scanned for free

^This. Happened twice to me, first time was just carbon build up from not being driven much. Nothing a bottle of fuel stabilizer and driving it more couldn't fix. Next time my driver side cat failed so I gutted them. Could be an O2 sensor as well.

Thanks guys and yes it was my fault i didn't screw it back on all the way rookie mistake but seriously didn't know it would cause a check engine light though i guess i learned something once again thanks. The light went away as i drove to work this morning.

It happens to everyone :cheers:

Thanks guys and yes it was my fault i didn't screw it back on all the way rookie mistake but seriously didn't know it would cause a check engine light though i guess i learned something once again thanks. The light went away as i drove to work this morning.
At least it was easy. It's happened to most of us.

[QUOTE=BigBirdLS1;16373903]My money is on the gas cap also. My gas was screwed in all the way and I would still get a SES light. It wound up being the cap itself was cracked I replaced it and I've never had a SES light again. Just something to look at OP.[/Q


357935 Check out mine imo it looks alright what do you think should i replace it cause the ses light came back on again ever since i didn't screw it back in properly

dude just get the car scanned, why guess at what it is.... it is absolutely pointless for us to guess what is causing the problem, when they can tell you exactly what it is after they scan.

dude just get the car scanned, why guess at what it is.... it is absolutely pointless for us to guess what is causing the problem, when they can tell you exactly what it is after they scan.

I got it scanned the trouble code is P0174 fuel trim system lean bank 2