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I need the o2 sensor replaced - 2004 Honda Accord

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On four cylinder models, the upstream oxygen sensor is located at the upper end of the catalyst pipe, right below the exhaust manifold flange (the downstream is located on the catalytic converter itself).
On four cylinder models, the electrical connector for the upstream oxygen sensor (the one before the catalytic converter) is behind the cylinder head, just to the left of the rear engine mount bracket (or you could find the sensor and simply follow the wire). Depress the release tab and and disconnect it.
Raise the vehicle.
Unscrew the sensor (since it has a wire coming from it, and a shield around the place where it goes in, you would be advised to rent a sensor removal wrench from Autozone or one of the same sort).
Autozone also carries the sensors. They are pretty expensive, something like $60.00, I think.
Hope this is helpful to you.

Posted on Nov 19, 2009

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How many o2 sensore are on the 99 bravado? I replaced the o2 sensor before the cat converter, now code says bank one( before cat.) needs replacing. are there 4?


the sensor before the cat is NOT an O2 sensor but a HO2S sensor ( two different sensors with different operations). If this is a V6 engine there are 4 sensors -- 2 --HO2S sensors before the cats --one for each bank cat and 2 O2 sensors after the cats.
The fault code would have spelt out the correct sensor for replacing

Jan 24, 2015 | 1999 Oldsmobile Bravada

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How to Replace the O2 Sensor in Mercury villager?


O2 sensor needs to be replaced when you get low gas mileage in car.
The procedure to replace is as follows: ----
1) There is primary and secondary O2 sensor connector.
2) Do the replacement of the O2 sensor only when the engine is completely cool.
3)You will see primary O2 sensor on the exhaust manifold.The secondary O2 sensor is located after the catalytic converter.
4)Put the car on jack stands on the rack, this will give you proper sensor location in the car.
5)Remove the O2 sensor with a socket wrench and O2 removal tool extension. Turn the O2 sensor counterclockwise to remove.
6) Most of the times the O2 sensor comes out very easily but if its bit hard to remove it then you can use "FREEZE spray" to make it gets loose.
7)The spray will make it come out easily.
8)When the O2 sensor is getting removed, some of the wiring's will also come out.
9)Before removing the O2 sensor, take the note of the wiring's and the position of wiring so while inserting new O2 sensor you don't get confused.
10) Now after you remove the old faulty O2 sensor out. Carefully insert new O2 sensor in same position.
11) And reverse/refit all the wires / parts which you removed while replacing the old O2 sensor.
This will help. Thanks.

on Mar 22, 2010 | Mercury Villager Cars & Trucks

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How to Replace the O2 Sensor in a Buick Century Car?


O2 sensor needs to be replaced when you get low gas mileage in car.
The procedure to replace is as follows: ----
1) The oxygen sensor is located under the car.
2) Put the car on jack stands on the rack, this will give you proper sensor location in the car.
3) The sensor has to be turned a bit then it can be easily removed.
4) Most of the times the O2 sensor comes out very easily but if its bit hard to remove it then you can use "FREEZE spray" to make it gets loose.
5) The spray will make it come out easily.
6) When the O2 sensor is getting removed, some of the wiring's will also come out.
7) Before removing the O2 sensor, take the note of the wiring's and the position of wiring so while inserting new O2 sensor you don't get confused.
8) Now after you remove the old faulty O2 sensor out. Carefully insert new O2 sensor in same position.
9) And reverse/refit all the wires / parts which you removed while replacing the old O2 sensor.
This will help. Thanks.

on Mar 22, 2010 | Buick Century Cars & Trucks

1 Answer

Universal o2 censor has 2 white 1gray 1black existing wires areblack/tan dkgreen/orng blk/ltbl blk/pink


First what do you mean by a universal o2 sensor? You must make sure that you have the right o2 sensor, most newer vehicles have four o2 sensors 2 upstream and 2 downstream, upstream and downstream are meant to show where the sensors are in relation to the catalatic converter,some o2 sensors have 1 wire or up to 4 wires most with four wires are heated o2 sensors so you need to be sure you ve gotten the right o2 sensor for you vehicle as well as the right replacement for the proper location! My experience is that most after market o2 sensors have the same colored wires as the vehicle. Also most o2 sensors have electrical plugs? If you need help finding the right o2 sensor for your vehicle then please dont be affraid to ask!

Feb 12, 2010 | 1996 Jeep Grand Cherokee

3 Answers

Code po430 not sure what maybe converter


One of three (3) possibitlies:
1. Catalytic Converter is malfunctioning.
2. O2 Sensor is malfunctioning. This will be the O2 Sensor located on the Catalytic Converter. However you should check and/or replace both sensors if needed.
3. You have an Exhaust Leak.
In Order of checking:
A. Check and Repair any Exhaust Leak.
B. Replace the O2 Sensor on the Catalytic Converter 1st. Also Known as the Downstream O2 Sensor or HO2 Sensor.
C. Replace the O2 on the Exhaust Manifold prior to the Catalytic Converter. Also Known as the Upstream O2 Sensor.
D. Replace the Catalytic Converter.
Let me know if this helped, or if you have any additional information, problems or questions. Feel free to contact me at FixYa.com!

Feb 01, 2010 | 1998 Ford Explorer

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How to Replace the O2 Sensor in a Audi All road Car?


O2 sensor needs to be replaced when you get low gas mileage in car.
The procedure to replace is as follows: ----
1) The oxygen sensor is located under the car.
2) Put the car on jack stands on the rack, this will give you proper sensor location in the car.
3) The sensor has to be turned a bit then it can be easily removed.
4) Most of the times the O2 sensor comes out very easily but if its bit hard to remove it then you can use "FREEZE spray" to make it gets loose.
5) The spray will make it come out easily.
6) When the O2 sensor is getting removed, some of the wiring's will also come out.
7) Before removing the O2 sensor, take the note of the wiring's and the position of wiring so while inserting new O2 sensor you don't get confused.
8) Now after you remove the old faulty O2 sensor out. Carefully insert new O2 sensor in same position.
9) And reverse/refit all the wires / parts which you removed while replacing the old O2 sensor.
This will help. Thanks.

on Mar 22, 2010 | Audi AllRoad Cars & Trucks

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How to Replace the O2 Sensor in a Chevrolet Cavalier Car?


O2 sensor needs to be replaced when you get low gas mileage in car.
The procedure to replace is as follows: ----
1) The oxygen sensor is located under the car.
2) Put the car on jack stands on the rack, this will give you proper sensor location in the car.
3) The sensor has to be turned a bit then it can be easily removed.
4) Most of the times the O2 sensor comes out very easily but if its bit hard to remove it then you can use "FREEZE spray" to make it gets loose.
5) The spray will make it come out easily.
6) When the O2 sensor is getting removed, some of the wiring's will also come out.
7) Before removing the O2 sensor, take the note of the wiring's and the position of wiring so while inserting new O2 sensor you don't get confused.
8) Now after you remove the old faulty O2 sensor out. Carefully insert new O2 sensor in same position.
9) And reverse/refit all the wires / parts which you removed while replacing the old O2 sensor.
This will help. Thanks.

on Mar 22, 2010 | Chevrolet Cavalier Cars & Trucks

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You'll need to give us the specific code, in the format P0xxx. Just saying "O2 sensor" doesn't mean anything. It could be the heater circuit, fuse, o2 sensor itself, etc. Changing an O2 sensor isn't too hard but you may not need to replace it/them.

Please report back with the code or look it up at http://www.check-engine-light.com

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2 Answers

96 Dodge Neon O2 sensor Ckt No Activity bank 1 sensor 1----how do I replace the sensor, will that correct a problem with the check engine light?


That would correct the problem, the O2 sensor is on the exhaust manifold or on the exhaust manifold down pipe. If you go to Auto Zone, they will have the O2 sensor you need and also the loaner tool you may need to remove the O2 sensor. Auto Zone also can give you the step by step instructions to replacing the O2 sensor in about 30 min. Once you located the O2 sensor, disconnect the wire harness and use the O2 sensor socket to remove the sensor from the exhaust. It's like removing a spark plug, to install the new O2 sensor is just to follow the same procedure in revers to the removal. Good luck.

Oct 28, 2009 | 1996 Dodge Neon

2 Answers

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ITS VERY EASY, DISCONNECT THE NEGATIVE BATTERY, UNPLUG THE O2 SENSOR WIRE PRESSING THE TAB AND USING A 22 mm. WRENCH LOOSE THE SENSOR LIKE A BOLT

Apr 12, 2009 | 2003 Toyota Corolla

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