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Unread 02-23-2009, 11:38 AM   #1
Alexia
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Oxygen 02 Sensor FAQ and Information

This guide will give a list of information on part numbers, location on the vehicle, and corresponding ODBII codes. All the information here relates to 50 USA States Compatible style emissions. For Jeeps with Federal emissions figuring out the location of the sensors should be fairly simple. Sensor one is before the catalytic converter and sensor two is after it.
Most after market sensors cost around $60 and from the dealer expect to pay more. Three of the four sensors for 2004 Wranglers cost around $30 for unknown reasons.

4.0L Engine
2000-2006(50 USA States Compatible)

Upstream, Front Manifold - Bank One, Sensor One
ODBII Codes: P0130, P0131, P0132, P0133, P0134, P0135
Physically located towards the front of the vehicle before the mini-catalytic converter.
~Parts~
Bosch
2000: Part #13122
2001: ???? - None specified
2002-2003: Part #13687
2004: Part #15505
2005-2006: Part #15123

MOPAR
2000: Part #56041 213AG
2001: Part #56041 943AA
2002: Part #56030 100AA
2003: Part #56031 110AA
2004: Part #56028 995AA

Upstream, Rear Manifold - Bank Two, Sensor One
ODBII Codes: P0151, P0152, P0153, P0154, P0155
Physically located towards the rear of the vehicle before the mini-catalytic converter.
~Parts~
Bosch
2000: Part #13280
2001-2003: Part #13664
2004: Part #15504
2005-2006: Part #13869

MOPAR
2000: Part #56041 213AF
2001: Part #56041 944AA
2002-2003: Part #56031 110AA
2004: Part #56028 994AA

Downstream, Front Manifold - Bank One, Sensor Two
ODBII Codes: P0136, P0137, P0138, P0139, P0140, P0141, P0143, P0144, P0145, P0146, P0147
Physically located towards the front of the vehicle after the mini-catalytic converter.
~Parts~
Bosch
2000: Part #15465
2001: Part #13687
2002-2003: Part #13718
2004: Part #15506
2005-2006: Part #15510

MOPAR
2000: Part #56041 213AF
2001-2003: Part #56041 847AA
2004: Part #56028 996AA

Downstream, Rear Manifold - Bank Two, Sensor Two
ODBII Codes: P0157, P0158, P0159, P0160, P0161
Physically located towards the rear of the vehicle after the mini-catalytic converter.
~Parts~
Bosch
2000: Part #15465
2001: Part #13691
2002-2003: Part #13691
2004: Part #15513
2005-2006: Part #15511

MOPAR
2000: Part #56041 213AF
2001-2003: Part #56041 848AA
2004: Part #5139 021AA


1997-1999(Federal Emissions)
Before Catalytic Convertor
~Parts~
Bosch
1997-1999: 13100

MOPAR
1997: Part #5602 7916 or 5602 7917
1998: Part #5604 1212
1999: Part #56041 212AE or 56041 213AF

After Catalytic Convertor
~Parts~
Bosch
1997-1999: 13138

MOPAR
1997: 5604 1108
1998: Part #56041 213AB
1999: Part #56041 213AG

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2004 Jeep Wrangler Unlimited, Automatic
RC 2.5" Lift - RC 2.5" Rear Track Bar Bracket - JKS 1.25" Body Lift - JKS Front Disconnects - JKS 1" Budget Motor Mount Lift - Spidertrax 1.25" Spacers -
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Build Project Thread
Rocker Guard Comparison Chart - Final Differential Gear Ratios - Oxygen Sensor FAQ

Last edited by Alexia; 02-23-2009 at 12:02 PM..
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Unread 02-23-2009, 12:26 PM   #2
harvey_birdman
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Informative post. Thanks!
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Unread 03-11-2009, 09:19 AM   #3
Alexia
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Sensor Heater Failure/Sensor Heater Circuit Malfunction
ODBII Codes: P0130, P0135, P0136, P0141, P0147, P0155, P0161
Newer oxygen sensors have built in heaters to get the sensor to operating temperature faster for better running, especially in cold climates. If the heater element fails it will not prevent the proper operation of the engine or emissions system, but the engine may run rough until the engine/exhaust is hot.

Sensor Shorted To Ground/Sensor Shorted To Voltage
ODBII Codes: P0131, P0132, P0137, P0138, P0143, P0144, P0151, P0152, P0157, P0158
Two issues could be happening here, either the sensor is wired incorrectly or has failed. If you are using universal wire in sensors, verify all the connections are in the correct places and that they are properly insulated. Again with standard original factory style sensors, ensure the insulation from the wires has not been worn through. The lower, after the converter, sensors route next to the hot exhaust pipes and while it is not common for them to melt, it is possible.
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RC 2.5" Lift - RC 2.5" Rear Track Bar Bracket - JKS 1.25" Body Lift - JKS Front Disconnects - JKS 1" Budget Motor Mount Lift - Spidertrax 1.25" Spacers -
Power Door Locks with Keyless Entry

Build Project Thread
Rocker Guard Comparison Chart - Final Differential Gear Ratios - Oxygen Sensor FAQ
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Unread 03-03-2010, 08:06 PM   #4
imnotaniceboy
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Is very difficult to me to find where to get it. No place is clear about it. I dont want to order the wrong item. I need Bank two sensor two, for a wrangler 4.0L L6

Can anyone help me with a ready to buy link?
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Unread 03-03-2010, 08:41 PM   #5
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Just remember, some 2000 4.0L engines don't have mini cats and only have 2 O2 sensors. Good write up by the way...
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Unread 03-03-2010, 09:27 PM   #6
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nicely done!
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Unread 08-20-2010, 08:04 PM   #7
kuruma
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OK so for more info on this: DO I need to change both if one goes bad? My upstream o2 sensor in the engine bay right on the back of the manifole area has a slow response, according to Jeep dealer. They wanted $140 for a new one. Found it for about $35 at Napa. I have read somewhere that you need to change both if you change one. True?
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Unread 08-20-2010, 09:53 PM   #8
bonza
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no need to replace both and I have been told Bosch O2 sensors are no good and that the OEM mopar sensors are actually NTK
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Unread 08-23-2010, 02:03 AM   #9
Zetto
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Quote:
Originally Posted by bonza View Post
no need to replace both and I have been told Bosch O2 sensors are no good and that the OEM mopar sensors are actually NTK
I recently received error code P0153 on my LJ with 35,xxx. The replacement Bosh o2 sensor is only $25 so I gave it a try. After several days I received error code P0152. Yesterday I replaced it with a Mopar o2 sensor and have not yet received any codes.
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Unread 09-10-2010, 05:16 PM   #10
mrcustom
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02 sensor leads

I am replacing the 02 sensors on my 04 wrangler X mater of fact whole exhaust . I know it had 4 02 sensors so thats the exhaust route im taking. When I look at the engine left side how do I tell which lead from motor goes to which 02 sensor? There is one located at back of engine by trans., there is one coming from the front of the engine area, and two coming from the side looks like leads are coming from same harness as map sensor. Now on the exahust it has a two piece header each ne has a bung for a sensor then there are the dual cats and a bung behind them. Could anyone hook me up with right bung right lead? I want to do this all early in AM bolts soaking now, So come on guys someone knows.....
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Unread 09-11-2010, 09:35 AM   #11
chris142
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2002-2003: Part #13687

This sensor is wrong. Yes it's what Bosch says will work but it throws o2 heater code. I tried 2 of then before giving up and paying the stealers price for a 02 sensor. No code since.

2001-2003: Part #13664

This one works ok so far.
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Unread 09-11-2010, 11:05 PM   #12
Pillswoj
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Napa carries the NTK's which were OEM in the TJ.
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Unread 09-12-2010, 09:53 AM   #13
chris142
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Quote:
Originally Posted by Pillswoj View Post
Napa carries the NTK's which were OEM in the TJ.
They only had Bosch at mine. Didn't offer to order any other brands. hmmmmmmmm
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Unread 09-13-2010, 12:15 PM   #14
Zetto
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Quote:
Originally Posted by mrcustom View Post
I am replacing the 02 sensors on my 04 wrangler X mater of fact whole exhaust . I know it had 4 02 sensors so thats the exhaust route im taking. When I look at the engine left side how do I tell which lead from motor goes to which 02 sensor? There is one located at back of engine by trans., there is one coming from the front of the engine area, and two coming from the side looks like leads are coming from same harness as map sensor. Now on the exahust it has a two piece header each ne has a bung for a sensor then there are the dual cats and a bung behind them. Could anyone hook me up with right bung right lead? I want to do this all early in AM bolts soaking now, So come on guys someone knows.....
Hi mrcustom,

The image shows the locating of sensors 1-4 and the appropriate plug locations(It may vary slightly by year). 1 and 2 are upstream while 3 and 4 are downstream(This is the way the dealership and most part houses will list them).

1 is Bank1, Sensor1
2 is Bank2, Sensor1
3 is Bank1, Sensor2
4 is Bank2, Sensor2

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Unread 09-13-2010, 06:44 PM   #15
mrcustom
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Thanks just one more question. 1 and 2 look like they come from front and back of motor and the go to the bung in the header. The other two on my 04 must be the ones that come out of the harness that runs along the fuel rail. Does this sound correct. Also are the pairs 1,1 2,1 the same sensor and 1,2 and 2,2 the same sensor.
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