I drove through a deep (about 4-6") puddle and afterwards the check engine light was on. The car still ran the same, what caused the light to come on? I hit the puddle doing about 40, so there was a that. Big splash! Some hydroplaning. Passenger side wheel well liner had to be put back in proper place. Going to check today.

 

fully stock ? or do you have a cold air intake?

 

we dont have any clue. it could be ANYTHING! however, with the wheel liner coming out....perhaps, a sensor was damaged?? who knows

Get the check engine light checked out and report back with the code.

 

I plan on getting it checked out in the next day or so. What shout I expect $$$ wise to just get the code? Yeah, the water was deeper than I calculated. Liner is back in, car runs and sounds fine, but we'll see.

 

Yeah, it's stock. It's my daily.

 

go to an autoparts store, like autozone.
every state except california, it's free to test and get the codes.
tell employee, "I have check engine light, can you check what it is for me?"
they'll hook up OBDII scanner and tell you what the code is. write down the code...it will start with a P0xxx

 

Hey, thanks for that. There's an autozone right around the corner. BRB.

 

btw, there will only be a cold if the light is still on, if it's off already, then you won't have a code stored.

 

Oxygen sensor. Ouch!

 

likely not even related to your water splash!

 

It could just be the o2 sensor got jammed up or shorted somehow.. I'd test by taking it off and cleaning, then clearing the code by unplugging the battery.


Also I wouldn't buy Bosch o2 sensors, the J engine is extremely picky with their o2 sensors. OEM or bust.

 

what I would do is reset the check engine light by removing negative terminal on battery for a few seconds to a minute.
re-connect it and drive normally. if check engine light comes back, and it's the same exact code, then you know its a faulty o2 sensor

 

It's gone off without me doing anything

 

So then you're golden!


You sure, they didn't just delete the code after scanning it..

 

if it comes back on with the same exact code, you know you have a faulty o2 sensor

 

The light was still on when he unplugged the OBD tool. He didn't mention deletion of the code. : I'll take the savings.

 

It was still lit when he unplugged the tool. Hey, I'm just happy I get to keep a couple hundred bucks in my pocket.

 

That's Good!






Pretty sure they can't delete the code. I believe it's illegal, and I don't know they have the capability.

 

MY OBD2 scanner has a clear function, wasn't sure what one they use

 

I couldn't tell you one way or the other. I would think it was illegal because it could be a way to defraud a buyer. But, doesn't disconnecting the neg terminal clear the code also?

 

Not sure about the legalities or AutoZone's policies, but you can certainly clear codes. My bottom-of-the-line, cheap ass OBDII can clear codes. Pulling the battery negative for about 10 min will reset the code as well. It's a good trouble shooting method to at least reset the code once and see how quick it comes back. I know with my O2 sensor, I reset the code and it would come back almost immediately on start-up, so I had it replaced.

 

I will definitely keep that in mind. Thanks!

 

I don't know, maybe it isn't illegal.


I don't have one, but have a good friend who has an HDS system to check codes, and he can clear them.

 

Troubleshooting use makes perfect sense. Hadn't considered it.