O2 sensor problem?

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Jul 9, 2012 | 11:40 AM

dallaswrenches

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O2 sensor problem?

I know this will probably be a dumb question and I think I know the answer. I am getting three codes..
P0151 low voltage bank 2
P0174 fuel trim lean bank 2
P0300 engine misfire

I'm pretty sure it's just the O2 sensor cause I already changed the plugs and wires.
Btw Its a 07 c6

Jul 9, 2012 | 12:54 PM

ChevyDave

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From: skiatook oklahoma

http://www.obd-codes.com/p0151
http://www.obd-codes.com/p0174
http://www.obd-codes.com/p0300

you might start from the front, air filter/maf/air leaks per p0174. clear codes if you find/do something up-front, see what reappears.

Jul 9, 2012 | 01:07 PM

tim414

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From: Pottsboro; Sometimes Dallas Texas

St. Jude Donor '12

Quote:

Originally Posted by ChevyDave

Did you take apart any of the air intake or did you lean on any of it while changing plugs/wires...? That could have knocked something loose.

Jul 9, 2012 | 03:19 PM

dallaswrenches

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I didn't do anything to the front. I have thought about cleaning the maf. But I also think the wire on the o2 sensor could have burnt since the wires go right next to the long tubes

Jul 9, 2012 | 03:21 PM

dallaswrenches

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Quote:

Originally Posted by ChevyDave

Thanks for the info. After I posted this I found the same thing lol. I am going to try and clean the maf also

Jul 9, 2012 | 03:47 PM

cclive

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From: Southern Utah

It is always good to mention the headers right up front...

Jul 9, 2012 | 04:12 PM

DSOMC6

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From: God's Country, ID

Quote:

Originally Posted by dallaswrenches

Lean bank codes suck. After doing the obvious things mentioned already, if it doesn't clear-up I would just get the car scanned with a tech II or HPT rather than start throwing parts at it (like O2 sensors etc). Several good performance shops is in your neck of the woods can scan/diagnose it quick.

Jul 9, 2012 | 07:00 PM

dallaswrenches

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Quote:

Originally Posted by cclive

It is always good to mention the headers right up front...

Haha ya sorry I forgot

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Jul 9, 2012 | 07:01 PM

dallaswrenches

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That's also what I thought about too I'm doing the maf now

Jul 9, 2012 | 11:03 PM

#10

Gitiup

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Let us know what you find.

Jul 10, 2012 | 09:09 AM

#11

dallaswrenches

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Quote:

Originally Posted by Gitiup

Let us know what you find.

The maf was pretty dirty, I cleaned it. I wasnt able to go anywhere last night to clear the codes so I don't know yet.

Jul 10, 2012 | 03:14 PM

#12

dallaswrenches

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well i cleared the codes. The lean code went away but now im getting four different 02 sensor codes. low voltage, high voltage, circuit insufficient, and heater performance. all bank 2 sensor 1