Question about 1993 Toyota Camry V6

1 Answer

Engine code 28

How to replace the oxygen sensor with the code. What is the exact location of the o2 sensor. Is it upstream or down stream sensor? Thanks

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 272 Answers

Are you sure it is a code 28? I only ask because my book doesn't show a code 28 in regards to this problem. I show codes 25 and 26 that may relate to this problem. But before replacing o2 sensor, there are other probabilities for this code showing up. They would be: Injector or injector circuit, Coolant temp sensor or circuit, Air temp. sensor or circuit, Airflow meter, Cold start injector, ECM (Electronic Control Module- THE BRAIN) Or the o2 sensor of course. Plz save your money before purchasing o2 sensor and check possible related items first.You may find o2 sensor is not at fault. Hope this helps.

Posted on Nov 14, 2013

Testimonial: "I am almost sure of o2 sensor because of this http://www.troublecodes.net/Toyota/"

  • Geoffrey White
    Geoffrey White Nov 17, 2013

    If you have a 3VZ engine with the iron block, it may have either 3 or 2 oxygen sensors, probably 3. The main sensors are located on the exhaust manifolds. You can see the sensor on the front bank, sticking through a hole in the heat shield. There may not be a corresponding sensor on the rear bank. The sub sensor is located is located on the top of the exhaust pipe under the front seats, and one of these will have to be removed to get at the wiring connector.

×

Ad

4 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad
c17hydro

Greg Bernett

  • 2989 Answers

SOURCE: replace oxygen sensor

REMOVAL & INSTALLATION Start the engine and allow it to reach normal operating temperature, then turn the ignition switch OFF. Disconnect the negative battery cable. Open the hood and locate the O2sensor connector. It may be necessary to raise and safely support the vehicle for access to the sensor and its connector. NOTE: On a few models, it may be necessary to remove the passenger seat and lift the carpeting in order to access the connector for a downstream O2sensor. Disengage the O2sensor pigtail connector from the vehicle harness connector. NOTE: There are generally 2 methods used to mount an O2sensor in the exhaust system. Either the O2sensor is threaded directly into the exhaust component (screw-in type) or the O2sensor is retained by a flange and 2 nuts or bolts (flange type). WARNING To prevent damaging a screw-in type O2sensor, if excessive force is needed to remove the sensor lubricate it with penetrating oil prior to removal. Also, be sure to protect the tip of the sensor; O2sensor tips are very sensitive and may be easily damaged if allowed to strike or come in contact with other objects. Remove the sensor, as follows: Screw-in type sensors: Since O2sensors are usually designed with a permanently-attached wiring pigtail, it may be necessary to use a socket or wrench that is designed specifically for this purpose. Before purchasing such a socket, be sure that you can't save some money by using a box end wrench for sensor removal. Flange type sensors: Loosen the hold-down nuts or bolts and pull the sensor out of the exhaust component. Be sure to remove and discard the old sensor gasket, if equipped. You will need a new gasket for installation. Perform a visual inspection of the sensor. Black sooty deposits may indicate a rich air/fuel mixture, brown deposits may indicate an oil consumption problem, and white gritty deposits may indicate an internal coolant leak. All of these conditions can destroy a new sensor if not corrected before installation. To install: Install the sensor, as follows: NOTE: A special anti-seize compound is used on most screw-in type O2sensor threads, and is designed to ease O2sensor removal. New sensors usually have the compound already applied to the threads. However, if installing the old O2sensor or the new sensor did not come with compound, apply a thin coating of electrically conductive anti-seize compound to the sensor threads. WARNING Be sure to prevent any of the anti-seize compound from coming in contact with the O2sensor tip. Also, take precautions to protect the sensor tip from physical damage during installation. Screw-in type sensors: Install the sensor in the mounting boss, then tighten it securely. Flange type sensors: Position a new sensor gasket on the exhaust component and insert the sensor. Tighten the hold-down fasteners securely and evenly. Reattach the sensor pigtail connector to the vehicle harness connector. Lower the vehicle. Connect the negative battery cable. Start the engine and ensure no Diagnostic Trouble Codes (DTC's) are set. Posting pictures next......

Posted on Jun 06, 2009

Murphybanton

Onifade Adewunmi

  • 2004 Answers

SOURCE: vsc vsc off check engine

Disconnect your battery for 10 minutes after which you connect it back the lights should go off. Don't report to toyota. Nigerian style!

Rate this............

Posted on Mar 21, 2009

USfalcon

anwar alkhaldi

  • 197 Answers

SOURCE: O2 Sensor problem

this pic with be the fix ya
bcc112d.gif

Posted on Apr 10, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What does the down stream oxygen sensor do


A downstream oxygen sensor in or behind the catalytic converter works exactly the same as an upstream O2 sensor in the exhaust manifold. The sensor produces a voltage that changes when the amount of unburned oxygen in the exhaust changes. ... The high or low voltage signal tells the PCM the fuel mixture is rich or lean.

Mar 09, 2017 | Cars & Trucks

2 Answers

Where is the O2sensor bank 1 at with a code of P0420. AND do I need to replace both sensors upstream and down. Or just the one that is showing up on the obd scanner.


Bank one is front side of cat. It should also tell u if it's cat 1 or cat 2. Depending on make an modle an yr. Catalyst 1 bank 2 is left cat back sensor. Catalyst 2 bank 2 is right cat back sensor. U do not have to replace upstream also. My o2 sensor Catalyst 2 bank 2 went bad. Had engine code for burning rich bank 2. Replaced tha down stream sensor an fixed problem runs better an better gas. This was in 97 gmc suburban. Idk what vehicle ur askin about. An I'm not to familiar with much about cars jus trucks an suvs.

Jan 02, 2017 | Cars & Trucks

1 Answer

Where are o2 sensors location


One would need the year, make, model, and engine size to tell you exactly where they are and how many.

O2 sensors are always in the exhaust stream, either in the exhaust manifold that is attached to the engine, or in the exhaust piping after the exhaust manifold. Some models have one for each bank of the engine, and some have only one sensor to monitor oxygen content. These engine sensors that the computer uses to "fix" or adjust the air/fuel ratio are called the upstream oxygen sensors. If the car is equipped (as most are today) with an oxygen sensor after the catalytic converter, this is called a downstream oxygen sensor. They are the same and do the same thing, but the downstream sensor is only used to monitor the efficiency of the converter. The upstream sensor(s) are what the computer reads to adjust or "trim" the fuel delivery.

So some older cars have only one o2 sensor. Not far from the engine in the exhaust stream. Some newer cars with dual exhaust (2 converters) may have four o2 sensors. 1 for each bank of the engine and 1 behind each catalytic converter. A 2005 Buick Century with a 3.1L engine, for instance, has only two o2 sensors: one (upstream) in the exhaust down pipe, and one (downstream) just behind the catalytic converter.

Aug 16, 2014 | Cars & Trucks

1 Answer

Cod 51 means o2 sensor is bad but tell me please which o2 sensor is bad .upstream or down stream sensor


Oxygen sensors code sometimes produced because of some other problem, blocked exhaust or cat converter, over rice fuel supply or vacume leak in intake manifold giving a real lean mix and so o2 out of range in both casesw

Dec 10, 2012 | Cars & Trucks

1 Answer

Where is the oxygen sensor located?


There are 3 O2 sensors on your car model. Two upstream sensors and one down stream sensor. Upstream are before the catalytic converter and downstream is after the catalytic converter. Its screwed into the exhaust pipe. ---------

Right bank upper sensor which is on the side of the engine closer to the fire wall and mounted on the exhaust manifold, right in the middle above the exhaust pipe.

------------

This will help.Thanks.Helpmech.

Oct 07, 2011 | 2001 Chrysler Town & Country

1 Answer

Downstream oxygen sensor location


Down stream o2 is always located after the catalytic converter,,Upstream o2 are before..The down stream o2 reads the effienciency of the converter

Sep 12, 2011 | 2006 Chrysler Town & Country

1 Answer

O2 sensor is comming up on service engine light warning, auto parts store says that there are 2 sensors on the car. Up stream and down stream. What are the locations for these and how hard are they to...


Hi Steve ..it refers to the location of the oxygen (o2) sensors relative to the engine. The upstream sensor is the one closest to the engine. The downstream sensor is furthest from the engine. Think of it as the way a stream of water, or in this case, a stream of exhaust flows.... From the engine To the tailpipe.
Changing them is no problem, getting to them sometimes can be a bear,, if you can reach them,, its simply remove the old one with a couple of bolts, and unplug it,, and replace

Aug 25, 2011 | 2000 Saturn SL

1 Answer

How do i buy online the oxygen sensors for a 2001?


The oxygen sensor are just refered to as upstream for the o2s and down stream are actually refered to as catalytic monitors. So if you have lean or rich codes these would refer to the upstream .

May 30, 2010 | 2001 Ford Windstar

2 Answers

Im confused my car is a toyota camry 6cyl not 4cyl and some say it has 4 o2 sensors and others say it has 2, hum, wich is it???? please help and also is there a site where it shows me like a diagram as to...


I have no diagram,but there is what they call upstream,and down stream locations.Upstream,is above the cat-converter,the down stream is below the cat-converter.This would be per-side.You have a left,and a right exhaust manifold.The exhaust pipes run from each manifold(left and right)to the catalytic converters.So you would have to have on the left side a up stream o2 sensor,above the catalytic converter.and a down stream o2 sensor,below the catalytic converter.this would also be on the right side also,this would be the total of four(4) o2 sensors.I hope this is helpful.

Oct 16, 2009 | 1998 Toyota Camry

2 Answers

Exact location of downstream O2 sensor.


Downstream O2 sensor is after (downstream) the catalitic converter on the exhaust pipe. Upstream O2 sensor is after (downstream) the engine exhaust manifold - before (upstream) the catalitic converter. Upstream O2 sensor controls air-to-fuel ratio to yield a small excess oxygen. Downstream O2 sensor assesses the catalitic converter performance.

Sep 22, 2009 | 2003 Pontiac Vibe

Not finding what you are looking for?
1993 Toyota Camry V6 Logo

171 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

Marvin
Marvin

Level 3 Expert

85206 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...