p0156

Xtacy · Oct 24, 2014

Been throwin this code off and on for some time now. Not sure what to do? I know it's something with the rear o2 sensor in bank 2 sensor 2. First, I'm not sure where that's located and second is that the o2 sensor that most likely needs replaced?

Gators Taco · Oct 24, 2014

http://engine-codes.com/p0156.html. Replace both O2 if you're going to do it.

revobreaker · Oct 24, 2014

How long after your exhaust was put on until the codes came up? do you have an o2 sim or anything? I got a code similar when I had my wires crossed (left harness plugged into the right o2 sensor and vise verse )

Eraser · Oct 24, 2014

I took my X1 off my truck and this intermittent problem went away, so now my x1 is a paperweight.

Xtacy · Oct 24, 2014

My truck has 132k miles. It also has doug thorley long tube headers. The code just appeared a couple months ago. I would scan it then reset, it would be good for about a month then reappear. Could it be the downstream o2 sensor?

autobodyX · Oct 25, 2014

I had to change the right side converter on my 06 to clear that code. It had run lean from the clogged fuel filter and got cooked.

Xtacy · Oct 25, 2014

How did you determine it was the cat that was bad? I'm just trying to troubleshoot

autobodyX · Oct 27, 2014

I removed the air fuel sensor the front 02 sensor and inserted a camera and looked at the honeycomb in the converter and could see it was clogged.

Xtacy · Nov 1, 2014

Soooo I replaced the rear drivers side o2 sensor which cost be $100 on Thursday, 2 days later the CEL came on again!

clamb · Mar 22, 2015

Has anyone run the urd y pipe in an otherwise stock exhaust? I'm getting a high voltage on bank 2 and a low voltage on bank 1 (both on brand new rear o2 sensors). I've just bought the truck and am starting to suspect the cats. Is it a easy to add a test pipe in their place?

Gadget · Mar 22, 2015

Has your transmission ever been removed?

If so the connections for the rear sensors may be reversed.

G

clamb · Mar 23, 2015

I'm not certain but I just replaced all vac lines in addition to the rear o2 sensors if I code tomorrow I'll flop the harnesses. Thx

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