2009 Genesis sedan 3.8L oil in O2 sensor connecter.

[joegr]

Ok I jus called em but the one I took off is the downstream right ?

What color is the connector?

 

[purg]

What color is the connector?

The new one is black old gray but they look the same

 

[purg]

I'm trying to make sure I have the right one out she jus ordered a different downstream and 90 percent sure Ii got the right one but the Internet is very vague on this for some reason

 

[joegr]

Upstream is between the engine and the converter and often has a green connector. Downstream is after the converter (further away) and often has a blue connector. Upstream is the actual O2 sensor, and downstream is really the O2 monitor.

Did you do any testing first, especially since the harness might be damaged by the oil?

 

[purg]

Upstream is between the engine and the converter and often has a green connector. Downstream is after the converter (further away) and often has a blue connector. Upstream is the actual O2 sensor, and downstream is really the O2 monitor.

Did you do any testing first, especially since the harness might be damaged by the oil?

Idk how to do testing ? How do I do that

 

[purg]

Idk how to do testing ? How do I do that

So I need the upstream then ?

 

[purg]

Where is sensor 1 then?

 

[joegr]

Idk how to do testing ? How do I do that

I think this more than can be accomplished over this forum. In any event, you bent the old one up, so it's bad for sure now. (Not a criticism, I know they are hard to get out.)
P0036 is for the downstream.

 

[joegr]

Do you mean bank 1? Bank 1 is usually the right (passenger) side of the engine.
There are four total O2 sensors, two on the left and two on the right.

 

[purg]

Where is sensor 1 then

Do you mean bank 1? Bank 1 is usually the right (passenger) side of the engine.
There are four total O2 sensors, two on the left and two on the right.

Yea I know where they are it's jus the part store only refers to them as upstream and downstream lol so I had a hard time figuring out if I had image right one especially when the part they gave me looked different but my friend said after market parts won't always look the exact same

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[purg]

I put the part in .everything fit .so here's hoping lol thanks for the info really it made me feel better bout doin that on my own

 

[Gunkk]

Oil wicking up or down a harness is a known thing, but is rare in our cars. It is certainly capable of throwing multiple codes as it tends to short the affected circuits. And since the ECU monitors all 4 wires, any issue affecting them will create multiple codes.

Firing a parts cannon (changing the sensor) will almost never solve it, as the affected wiring likely needs to be replaced. Don't use 3rd party sensors on our cars. Pay the $ and stick with OEM or you'll create more problems than you solve.

Purg, my advice is to find the best automotive electrician in your area and pay them a few hundred $ to diagnose it properly. The fix is probably replacement of the affected sections of the harness. Keep your current/old sensor, as it can probably go back on the car.