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HOw many o2 sensors are on a 2010 Jeep Wrangler

Is there a o2 sensor before and after the cat

Posted by Randy on


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  • 261 Answers

SOURCE: 1996 Jeep Cherokee. O2 sensor problem.

i would check with the dealer who changed the converter to check and see if the sensors were damaged while they replaced the converter or may be they have forgotten to hook it back up check before you throw away your good 02 sensr

Posted on Nov 12, 2008


SOURCE: p0141 code

bank 1 sensor 2 that means the side where cylinder #1 is the second sensor so it is by the cat or after

Posted on Dec 10, 2008



  • 362 Answers

SOURCE: Determine which O2 sensor to replace.

There are many reasons for a PO171 code, these need to be checked before replacing O2's:

  • Vehicle driven low on fuel or until it ran out of fuel
  • One or more injectors restricted or pressure regulator has failed
  • Fuel delivery system supplying too much or too little fuel during cruise or idle periods (e.g., faulty fuel pump, or dirty fuel filter)
  • Air leaks after the MAF sensor, or air leaks in the PCV system
  • Air leaks at the EGR gasket, or at the EGR valve diaphragm
  • Exhaust leaks before or near where the front HO2S is mounted
  • HO2S is contaminated, deteriorated or it has failed
  • Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
  • Base engine "mechanical" fault affecting one or more cylinders.
  • Posted on Feb 10, 2009

    66 chrgr

    mike loshbough

    • 1011 Answers

    SOURCE: Where is the bank 1 O2 Sensor on the 2001 Olds

    it is on the back of the exhaust manifold on the back of the motor by the fire wall

    Posted on Mar 04, 2009


    • 28 Answers

    SOURCE: Code P0141. O2 Sensor heater circuit fault (Bank1,

    It is probably the sensor before the cat. if it has a heater. The heater circuit going bad is a common problem, it does not affect the way the car runs after it warms up, it is an emission device to heat the O2 sensor up quicker than the hot exhaust gas would. It should be replaced because it will keep your check engine light on and you would not be able to pass an emission test.

    Posted on Oct 12, 2009

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    Location of bank 1 sensor 1 o2 sensor 0n a 6 cylinder jeep grand Cherokee laredo

    bank one is left side top of engine standing looking at it , O2 sensor is located on exhaust manifold there is one on each manifold (right-left)

    Sep 29, 2016 | Jeep Cars & Trucks

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    I have a 2010 Buick Lacrosse that had the P0420 code. Replaced the Bank One Cat and the code and the check engine light came on again with the same code.

    Did they use an original equipment cat from the dealer or an aftermarket one? Aftermarket cats can cause more problems than they fix. There very few that I will personally install.

    are they monitoring downstream O2 sensor data to see if the O2 sensor may be biased high? If the cat is doing its job the downstream O2 sensors will read a lower voltage. Tricking the vehicle into running rich or lean will cause this voltage to change ( unplugging a coil will cause the Downstream O2 to read high as the cat tries to burn off the extra fuel. Unplugging a fuel injector will cause the downstream O2 sensor to read low as extra air is being pushed thought the cats). Making sure the downstream O2 sensors are capable of switching should be part of the diagnostics.

    Are you sure they replace the right cat? There are 5 different engine options for this car. If you let me know what engine you have I can let you know what bank is bank 1.

    I’m happy to assist further over the phone at

    Feb 20, 2015 | 2010 Buick LaCrosse CXL

    1 Answer

    1998 Jeep wrangler 4.0 sputters after it warms up. Runs good when cold. Changed plugs,wires,cap,rotor,air filter,checked vaccum lines. There are many sensors, what do I do next?

    Try disconnecting the upstream O2 sensor(s). If the sputtering stops replace the O2 sensor(s). Mine was faulty and stuttering too and no check engine light or code was thrown. After unplugging the O2 sensor and monitoring for a week with no issue I had it replaced for $100 - $150 at a local shop.

    Dec 27, 2010 | 1998 Jeep Wrangler

    1 Answer

    I cannot get my o2 sensor after my cat off cuz of the tight spaces underneath is there anything you can tell me that could possibly help it's on a jeep wrangler 2000

    You may do well to get an offset wrench to get in there.
    Often if a sensor was installed previously without using anti-seize compound you will not get it out unless the pipe is heated using an oxy-acetylene torch. If that has happened and you don't use heat, you will destroy the sensor or the threads in the pipe before you get it out.

    Sep 16, 2010 | Jeep Wrangler Cars & Trucks

    1 Answer

    My Jeep will run, but it misses and backfires and will not accelerate. It has a new computer, new fuel pump, new spark plugs and the timing is right. What else could it be?

    was the computer programed??, also how about the crank sensor, then the next thing is to check for a bad cat, you may have a clogged cat converter that restricks the exhaust flow,and last is the o2 sensor. have your computer scanned for any codes.

    Apr 16, 2010 | 1997 Jeep Wrangler

    1 Answer

    1992 jeep wrangler with faulty acceleration. It

    It is possibly the O2 sensor. I had some issues with early 90's 4.0 liters where the O2 sensor would stick rich under heavy acceleration and would cause it to lean out and bog down. It felt like a rochester four barrel flat spot on an old chevy. I hope this helps.

    Apr 30, 2009 | 1992 Jeep Wrangler

    2 Answers

    I have a 2004 jeep wrangler and i am reading the codes p0122 p0123 and p0432 can anyone let me know what these dtc's mean and if possible how to fix what it broken

    P0122 - Throttle Position (TP) Sensor Circuit Low Voltage
    P0123 - Throttle Position (TP) Sensor Circuit High Voltage
    without checking it 1st I would guess the TPS is most likely defective.
    P0432 - Catalyst System Low Efficiency Bank 2, you may have to replace the Catalytic convertor, it may be worn out,
    A WORD OF CAUTION: Don't use aftermarket cats, they tend to reset the same code due to compatibility issues, also replace the cat monitor sensor (looks like an O2 sensor) located just to the rear of the bank 2 cat converter.

    Dec 04, 2008 | Jeep Wrangler Cars & Trucks

    2 Answers

    My 1994 jeep wrangler 4.0 litre has a fuel problem it acts like it runs out of gas

    is the gas old? Try New gas and getting Fuel Injector Cleaner.

    Jul 21, 2008 | 1998 Jeep Wrangler

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