Check engine light

After getting gas my check engine & traction light came own. Dealer said it was water in gas, the code was for the catalilytic converter. Gas station said no one else had issues. After Dealer reset code the next day it came on again. Anyone have a idea what the cause is?

 

Any mods done to power train? Sounds like you need to drain out the gas before you harm something.

 

Water in the gas , station would never admit to it.

 

Crank position sensor gets my vote.

 

OP, when did you buy your truck? Do you know build date?

 

how did dealer determine water was in the gas?

 

Tell us the code(s) that was pulled.

BTW, there is no code for impure gas. There might be other codes to be set that it could cause, like random misfire and such.

Someone is blowing smoke up your skirt.

 

Did you tighten the gas cap so it clicked?

 

All out of popcorn...

 

Just got gas and light comes on. My vote is for gas cap not seated.

 

This just happen to my 15 deeler is telling me it my ECU truck is still under warranty

 

And apparently still not seated, since it came back already. But I'm sure the dealer would have done that for him, right? I mean how else did he discover water in the gas.........

 

The Dealer said the code was for catalitic converter. He advised to run the gas out, fill up again. If light stays on he will check further. I did loosen the gas cap & retighten, stayed on. After the dealer checked it yesterday it went off, then today after driving for 15 min, the light came back on.

 

Well if so its under warranty. So it didn't hurt.

 

A loose gas cap will show emissions code. Its easy for dealer to just say, yep, water in gas, especially if customer states he just got gas. I doubt they even removed the cap and retightnened it. Just reset code and let him go.

 

I'm with this guy

 

Code says found cat. Conv codes. All test OK, test drive and monitor passed.

 

Bingo! (you couldn't see my tongue in cheek before)

 

If there is a problem with the O-ring on the cap the code will come back. I am not sure if Toyota uses the same sequence, but my dodge needs to see the issue correct for three run cycles before completely dissappearing, unless issue is resolved and code reset by scan tool.