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Posted on Dec 12, 2011


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1 Answer

Where is bank 2 sensor 2 on a 2002 Sebring lxi 3.0 two dr coupe ?

This should be the O2 sensor on the passenger side, after the converter. Its job is to report to the ECU on exhaust after passing through the converter, so has no effect on the way the car runs, but just reports on how the converter is doing its job.

Oct 03, 2016 | Cars & Trucks

1 Answer


If you mean O2 sensor, bank 1 is the driver's side on RWD, or front bank on FWD. The #2 sensor is the one behind the catalytic converter, which does little but telling the ECU if the converter is doing its job.

Jul 22, 2015 | 2006 Hyundai Tiburon

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The O2 sensors are located in the exhaust pipe just off the engine exhaust manifolds and before the Catalytic Converter. A V6 has 2 of them, one for each bank of cylinders, they are referred to as the "Bank 1 and Bank 2 Upstream sensors". There is also a sensor that looks like a O2 sensor it is located behind the Catalytic Converter, its job is to monitor the efficiency of the Catalytic Converter and signal you with a check engine light and a code P0420 if the Cat is not doing its job. Each sensor has its own set of fault codes if problems are sensed in the O2 levels in the exhaust (fuel control problems) and other problems like the heater circuit in the sensor is defective.

Oct 01, 2011 | 1992 Chevrolet Lumina

1 Answer

I noticed my engine light came on and I had power loss trying to climb a hill. I got home and ran the codes and P0420 came up. So my question is was is P0420 code mean?

Catalyst efficiency below threshold bank one. This could be the 02 sensor behind the catalytic converter on bank one or the catalytic converter is not doing its job. The numbers have to be read to determine which is bad. The takes a hand held computer

Aug 23, 2011 | Dodge Ram 1500 Cars & Trucks

1 Answer

What does code po420

P0420 Error Code: Catalyst System Efficiency Below Threshold (Bank 1)\
This means that your bank 1 catalytic converter is not doing its job, or the O2 sensor system monitoring it has an issue.

May 09, 2011 | 2000 Cadillac DeVille

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The computer show's 02 sensor bank 2 stuck and to lean, which one is it their are 4 of them on this truck

bank 1 sensor 1 is driver side exhaust pipe in front of catalytic converter, bank 1 sensor 2 is drivers side exhaust pipe behind catalytic converter, bank 2 sensor 1 is passenger side exhaust pipe in front of catalytic converter, bank 2 sensor 2 is passenger side exhaust pipe behind catalytic converter.

Mar 23, 2011 | 2006 Ford F-150

1 Answer

How do you change oxygen sensor bank 1 sensor 1 & bank 1 sensor 2 they are b4 the catalytic converter.what will need to do this job.and are they the same sensors one is $179.00 & $69.00.if to is...

do not buy the 1 for 69.00 it more or less a universal wher u have to rewire it buy the 1 for 179. and it takes a 7/8 wrench and bank 1 is the 1 on drivers side up by manifold not by converter

Feb 21, 2010 | 2002 Suzuki XL-7

1 Answer

I need to replace the bank 1 sensor 1 on a 97 ford explorer. I have found the bank 2 sensor 2, but I can't find the bank 1, sensor 1. Is there anywhere to find a diagram or can it's location be described...

Thanks for trying fixya,

There are 4 sensors, though not all of them are technically called "oxygen sensors. There are two that are upstream of the catalytic converters, one on each bank. Then, there are two more, one after each catalytic converter, that are oxygen sensors, but officially they are called catalyst monitors, because that is the job they are assigned to do.

Bank One would be the left catalytic - trace to left manifold and bank the other.


Nov 30, 2009 | 1997 Ford Explorer AWD

1 Answer

Garputo22 Do you know how much that costs and how hard the

Its a pretty extensive job. It actually takes as long as replacing the motor and its expensive as they also have problems with the head bolts getting stripped..

Here are the details

Cylinder Head Gasket Head Gasket 2 - Right 12560633 $97.25 Notes 2 - Left 12560632 $97.25 Notes Labor Skill
Standard Cylinder Head Gasket Replace Right Bank B 9.6 19.1 Notes Includes: Remove Carbon And Make All Necessary Components. Left Bank B 9.9 19.1 Notes Includes: Remove Carbon And Make All Necessary Components. Both Banks B 11.5 20.3 Notes Includes: Remove Carbon And Make All Necessary Components.

Jun 06, 2009 | 1999 Cadillac Seville

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