Anyone know where the rear 02 sensors

Dave07997S · 07-24-2011, 01:36 PM

connect to the harness? I have one bad rear o2 sensor and I need to replace it. I need to know where it connects to the harness, as I already know where it goes on the xpipe. Any help appreciated..

Dave

kitw · 07-24-2011, 03:08 PM

Hey Dave,

Which side do you mean? It disconnects about 10" from the sensor. Not sure where the harness goes after that.

Dave07997S · 07-24-2011, 04:23 PM

Quote:

Originally Posted by kitw

Hey Dave,

Which side do you mean? It disconnects about 10" from the sensor. Not sure where the harness goes after that.

Hey Kit, thanks..bank 1 (passenger side) rear 02 sensor. Looks like somthing whacked it as the top of the post is bent by 45 deg. I'm getting a code P0036.

Do you think I will have to remove the exhaust again to get to it? I'm running Turner TPs.

Dave

BMRLVR · 07-25-2011, 06:20 PM

Quote:

Originally Posted by Dave07997S

Quote:

Originally Posted by kitw

Hey Dave,

Which side do you mean? It disconnects about 10" from the sensor. Not sure where the harness goes after that.

Hey Kit, thanks..bank 1 (passenger side) rear 02 sensor. Looks like somthing whacked it as the top of the post is bent by 45 deg. I'm getting a code P0036.

Do you think I will have to remove the exhaust again to get to it? I'm running Turner TPs.

Dave

Just lift/jack the car up and climb underneath. You will realize it is simple once you take a look. No exhaust removal will be necessary.

kitw · 07-25-2011, 06:24 PM

Quote:

Originally Posted by BMRLVR

Just lift/jack the car up and climb underneath. You will realize it is simple once you take a look. No exhaust removal will be necessary.

Yeah, what he said. It's pretty easy to get off, and there is just acircular connector with clips on either side, about 10" above the sensor or so, that comes off.

jqsmooth · 03-13-2016, 05:38 PM

Quote:

Originally Posted by Dave07997S

Hey Kit, thanks..bank 1 (passenger side) rear 02 sensor. Looks like somthing whacked it as the top of the post is bent by 45 deg. I'm getting a code P0036.

Do you think I will have to remove the exhaust again to get to it? I'm running Turner TPs.

Dave

Had the same code come up today. P0036. Ordered Bosch sensor from ECS. Went out for a drive, the Service Engine Soon light is gone. WTF!!!

A couple of weeks ago, the SES came up and went to dealer. It was the bank 1 sensor 1 that was faulty. Charged me close to $800. F that! I'm taking the part to a local shop if the rear is shot.

jqsmooth · 03-14-2016, 12:21 PM

and it's back... noticed slight drop in gas mileage as well... time to visit my local shop.

burnrbr · 03-18-2016, 05:37 AM

I have experienced O2 sensors that are going bad swing in and out of compliance with the ECU causing the error code come and go. It was with other cars, but O2 sensors are generally the same.

jqsmooth · 03-18-2016, 09:45 AM

Got the part and took it to the local shop. they switched them out, cleared the code. running fine for now. saved hundreds. whenever the SES light comes on, i think it's prudent to take it to Autozone to get the code. then, proceed from there. whether you wanna take it to the dealer(major issue) or just a local shop for something simple like O2 sensor, that's up to you but at least you know what you're dealing with.

07-24-2011, 01:36 PM	#1
Dave07997S Brigadier General 721 Rep 3,964 Posts Drives: 2020 Ford Mustang GT Join Date: May 2009 Location: El Segundo, CA iTrader: (1)	Anyone know where the rear 02 sensors connect to the harness? I have one bad rear o2 sensor and I need to replace it. I need to know where it connects to the harness, as I already know where it goes on the xpipe. Any help appreciated.. Dave __________________ 2020 Ford Mustang GT 6MT PP1 444rwhp (Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk
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07-24-2011, 03:08 PM	#2
kitw Colonel 471 Rep 2,991 Posts Drives: F91 M8, 991.2 GT3 Join Date: Jun 2007 Location: Bay Area, CA iTrader: (20)	Hey Dave, Which side do you mean? It disconnects about 10" from the sensor. Not sure where the harness goes after that. __________________ DSC_3369 by Kit W, on Flickr
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03-14-2016, 12:21 PM	#7
jqsmooth Captain 160 Rep 773 Posts Drives: M6 Join Date: Apr 2009 Location: New Jersey iTrader: (2)	and it's back... noticed slight drop in gas mileage as well... time to visit my local shop. __________________ 2008 E64 M6 2011 E92 l SSII l Fox Red - 145k and Totaled. 2012 Toyota Prius C - 145k and Totaled. 2002 Nissan Pathfinder - 301.6K and Junked. 2000 Mitsubishi Montero Sport - Rolled & Totaled. 1995 Cadillac Fleetwood - RIP.
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03-18-2016, 05:37 AM	#8
burnrbr Second Lieutenant 69 Rep 278 Posts Drives: 2017 M3 Comp DCT Join Date: Jul 2015 Location: Jacksonville, FL iTrader: (2)	I have experienced O2 sensors that are going bad swing in and out of compliance with the ECU causing the error code come and go. It was with other cars, but O2 sensors are generally the same.
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03-18-2016, 09:45 AM	#9
jqsmooth Captain 160 Rep 773 Posts Drives: M6 Join Date: Apr 2009 Location: New Jersey iTrader: (2)	Got the part and took it to the local shop. they switched them out, cleared the code. running fine for now. saved hundreds. whenever the SES light comes on, i think it's prudent to take it to Autozone to get the code. then, proceed from there. whether you wanna take it to the dealer(major issue) or just a local shop for something simple like O2 sensor, that's up to you but at least you know what you're dealing with. __________________ 2008 E64 M6 2011 E92 l SSII l Fox Red - 145k and Totaled. 2012 Toyota Prius C - 145k and Totaled. 2002 Nissan Pathfinder - 301.6K and Junked. 2000 Mitsubishi Montero Sport - Rolled & Totaled. 1995 Cadillac Fleetwood - RIP. Last edited by jqsmooth; 03-18-2016 at 09:51 AM..
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