Question about 1995 Toyota Camry

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96 Camry 4cyl. 111,000mi. CATALYTIC CONVERTER(manifold) failing

Check engine light came on and after diagnostic at Toyota was told that the manifold cat. converter needs replacement and that the front pipe cat. conv. would probably need replacement soon. If engine running okay and all,(1) how pressing is this repair to have done? (2)anyway to estimate how much time I have before converter fails?(3)what happens and what damage when conv. breaks? Is this the type of repair that an unskilled do-it-yourselfer should tackle?

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As long as the area you live in doesn't require emission testing, you don' need to fix it. It won't hurt anything. But you will have to stare at the light or put tape over it.

Posted on May 11, 2009

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Code p0420 2003 4cyl camry


Catalyst System Efficiency Below Threshold (Bank 1)

You have two oxygen sensors. one is before your catalytic converter and one is after. The sensors should read a difference indicating your catalytic converter is working. When they don't read a difference is when you get this code. There are several possible causes, but most often its a damaged catalytic converter. To know for sure you will need a diagnosis.

Jul 02, 2014 | Toyota Camry Cars & Trucks

1 Answer

Toyota camry problems


before you go changing out the catalytic converter realize that the engine light comes on with only a few percent of the catalytic converter plugged - so before you change it, clan out the engine combustion chamber. i did this on my ford Taurus and with a $5 can of carb cleaner, it solved the problem

Jan 28, 2014 | Cars & Trucks

2 Answers

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

1 Answer

Engine code 430 for 2001 toyota highlander


Possible Causes:
Oxygen (O2) sensor not working correctly
Damaged or leaking exhuast (pipe, manifold, catalytic converter)
Damaged catalytic converter

Diagnostic Help:
To diagnose a P0430 trouble code we begin by checking for exhaust leaks under the vehicle. Then use an oscilloscope to check the waveforms of both upstream and downstream O2 sensors. The rear reading should vary, the front should be steady. Replace as necessary. Check the rear Heated O2 Sensor. Check the catalytic converter, replace if necessary. If necessary, check for wiring and component. hopes this helps thanks

May 30, 2010 | 2001 Toyota Highlander

1 Answer

I have a 2002 toyota camry V6 and did not pass


O2 sensors are a possible cause. It has one converter, but 2 oxygen sensors...1 upstream, and 1 downstream of the converter. Which means one is very easy to get to (under the hood, on the manifold), and one is not. Usually the check engine light will come on if O2 sensors are faulty.

Apr 02, 2010 | 2002 Toyota Camry

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

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

2000 camry LE 4cyl...p0420


The code PO420 you have is Catalyst System efficiency is below threshold bank one. Usually replacing the O2 sensor that's the front most in the exhaust system will cure your problem,

Your Check Engine light is on and you find a P0420 code for a catalytic converter fault. Does that really mean your converter has reached the end of the road and needs to be replaced? A new converter can cost $600 to $1000 or more if a new car dealer or repair shop does the job, or maybe half that amount if you do it yourself. It's an expensive fix that may or may not be necessary. The problem, in most cases, is an emissions issue, not a performance issue that affects the way the engine runs.

A P0420 diagnostic trouble code is a "generic" fault code that is set when the Onboard Diagnostic II (OBD II) system sees a drop in converter efficiency. The OBD II system monitors catalyst efficiency by comparing the switching activity of the upstream and downstream oxygen sensors in the exhaust. The upstream O2 sensor in theexhaust manifold reflects the condition of the exhaust gases as they exit the engine. The downstream O2 sensor in or behind the catalytic converter reflects the condition of the exhaust after it passes through he converter.

The catalytic converter is like an after-burner. It oxidizes (burns) any residual fuel vapors (unburned hydrocarbons or HC) in the exhaust. It also burns any carbon monoxide (CO) in the exhaust. The exhaust must meet federal emission standards, and if a problem exists that causes emissions to exceed the federal limits by 150%, the OBD II system is supposed to catch the fault, set a code and turn on the Check Engine light.

Thanks

Apr 26, 2009 | 2000 Toyota Camry

1 Answer

Catalytic converters


If you are going to change the convertors I would just replace the first one closest to the engine. But when a computer code says "bank" they usually are refuring to the Oxygen sensor that is there , they are classified as bank 1 and bank 2. 1 being closest to the engine and 2 being farther down the exhaust. If its a computer code that told you bank 1 you might need to look at your oxygen sensor instead of your catalitic converter.

Dec 04, 2008 | 1996 Toyota Camry

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