Question about 1999 Toyota Camry

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I have a 1996 Toyota Camry and my front catalytic conveter is not working properly. The one that has an 02 sensor and connects to the manifold in front of the engine. Does anyone know a cheap place I can get one? I live in California, it must be california approval, because we are require to get smong check here.

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See if they have aftermarket one in cal . but it look like you will have to bye a new one. they do not sell them cheap.

Posted on Sep 05, 2009

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I have an 03 Camry 4cyl LE that needs an O2 sensor. Does this model have more than one sensor? I have gotten conflicting info about the number of sensors and corresponding pns.


YOU HAVE 2 OXYGEN SENSOR UPSTREAM OXYGEN LOCATED ON THE EXHAUST MANIFOLD. THE DOWN STREAM OXYGEN SENSOR LOCATED BEHIND THE CATALYTIC CONVERTER.YOU CAR HAS ONLY 2 OXYGEN SENSORS.

Aug 05, 2011 | 2003 Toyota Camry

2 Answers

How many oxygen sensors does my 1994 toyota camry V6 have? How do I find out which sensor is bad? I have check engine light on.


v-6 has two O2 sensors, one located in the exhaust manifold and the other near the catalytic converter

Mar 06, 2011 | 1994 Toyota Camry

2 Answers

Were is upstream 02 sensor on an 2002 toyota camry.


The secondary oxygen sensor is typically located behind the catalytic converter somewhere on the exhaust. You will need to get under the vehicle to look for it. it should have wires coming out of it leading up to the engine bay. It should be fairly easy to replace. It screws in just like a spark plug

Jan 18, 2011 | 2002 Toyota Camry

1 Answer

Po420" Problems 1996 plymouth van


A code P0420 may mean that one or more of the following has happened:
  • Leaded fuel was used where unleaded was called for
  • An oxygen sensor is not reading (functioning) properly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Retarded spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of readings

Some suggested steps for troubleshooting a P0420 code include:
  • Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2), replace if necessary
  • Replace the catalytic converter

Oct 19, 2009 | 1996 Plymouth Voyager

2 Answers

How many o2 sensors does my 98 camry v6 has?


There are 2 sensors. The main one is located in the exhaust manifold (facing you as you look at the engine from the front of the car). The secondary sensor is located behind the catalytic convertor, which is under the car, approximately beneath the front passenger seat. On some cars, somewhere around 1999, Toyota started using an air/fuel sensor instead of an oxygen sensor in at least one of these locations, so you need to be sure which one you have before replacing. They are not interchangeable.

Oct 16, 2009 | 1998 Toyota Camry

2 Answers

P0420 and P0430


The AF sensors are uupstream and the O2 down stream. The car' s computer tests them and it is saying your cats are bad. If you have a scan tool you could look at the data and see what the sensors are seeing. The Af sensors are the ones that control the fuel ratio in the car while the O2's just watch. AF's would be the one to change but there is no garuatee that the codes won't come back.

Sep 24, 2009 | 2002 Toyota Camry

1 Answer

PO420


Not just a faulty catalytic converter will trigger this code. Many other issues can trigger this code.

  • Leaded fuel was used where unleaded was called for
  • An oxygen sensor is not reading (functioning) properly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Delayed spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of readings
Possible solutions:
  • Check for exhaust leaks at the manifold, pipes, catalytic converter.
  • Replace Coolant Temperature Sensor
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2)
  • Replace the catalytic converter
  • Have timing adjusted


Aug 25, 2009 | 2002 Toyota Camry

1 Answer

Where is the oxygen sensor on a 1996 infiniti , how many are there? how much should they cost and how would i replace them.


Well you didn't say which engine you have so I selected a typical V6 from that year. See below. There is one sensor between each exhaust manifold and Catalytic converter, Many vehicles also have an additional O2 sensor afret the Catalytic converter.

They are removed & replaced with special deep set slotted socket wrenches. These tools can usually be borrowed from the local chain supply stores.

o2%20infin.jpg46b2982.jpg

Jul 12, 2009 | 1989 Toyota Camry

1 Answer

Ford windstar OBD II code P1537/38, P0171 and P0420


It could all be related.P1537/38 are the intake manifold runner controls are stuck open.They are controlled by vacuum solenoids.The P0171 is bank one of the engine is running lean,usually caused by a vacuum leak, P0420 is catalytic converter efficiency code. The computer monitors the switch rate of the front 02 sensors and compares it to the switch rate of the rear 02 sensors to tell if catalytic converter is doing its job. Now if the front 02 is not switching properly then this will cause this test to fail and set this code.
Look on bottom section of the intake manifold at the back of engine(where tranny bolts up) you should see the vacuum motors there on the intake,these are the control motors for the intake manifold runners.Make sure the vacuum lines are hooked up and lines are not leaking. Also you will see a lever from it to intake make sure they move and are not binding.

Mar 11, 2009 | 1996 Ford Windstar

1 Answer

I recently had my 1995 toyota camry fail emissions test because of high co%. I have a clean air filter, new oil spark plugs have about 25000 miles use and I replaced the O2 sensor. What else might cause...


Well, if you have the 6 cylinder, there are 3 02 sensors in that car.
One on front manifold, one on back manifold, and one in the center pipe.You changed one, good idea to change the other 2. That is if you have the 6 cyl.

Jan 27, 2009 | 1995 Toyota Camry

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