Question about 2004 Chevrolet Impala

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I am looking for location of bank 1 oxygen sensor 2004 impala

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See this picture here.... Hope this helps. i am looking for location of bank 1 oxygen sensor - mcneb_7.jpg

Posted on Jan 01, 2011


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Posted on Jan 02, 2017


Ricky Gittins

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SOURCE: looking for location of bank 1 oxygen sensor on

left side of engine

Posted on Jul 29, 2011


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SOURCE: where is the oxygen o2 sensor located on 2004

There are 2 oxygen sensors on the 2004 Impala, located under the car near the CAT converter.

Jack up the passenger side or onto ramps to make easier acess.

Posted on Feb 03, 2011


  • 279 Answers

SOURCE: what is the location ofttgen sensor, bank 2

Its located in the exhaust manifold on the passenger side,its the sensor closest to the rear of the engine.

Posted on Feb 07, 2010


SOURCE: I have a 2001 chevy

Bank1 ---is always the side of the engine cylinder #1 is on
Bank 2 --- the other side

Sensor1---the ones closest to the engine either in or just before the converter
Sensor2 --- is the down stream or monitor sensor in the outlet of converter

Just replace all upstream O2 Sensors,ones before the converter by 100,000
miles or in your case when they fail

Only a guess but #1 may be on the left side,you don't do just one if you have more
You don't need to do the rear sensors though

Posted on Sep 21, 2011

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I am trying to locate the Oxygen Sensor on my 2003 Impala?

Chevrolet Impala comes equipped with two oxygen sensors, one on either side of the catalytic converter. Locating the sensors is as simple as crawling under the vehicle.

  1. Location
    • The bank 1, sensor 2 oxygen sensor is located downstream of the catalytic converter. To get to the sensor, crawl underneath the vehicle and trace the exhaust pipe until you reach the catalytic converter. Continue to follow the exhaust pipe until you reach the bank 1, sensor 2 oxygen sensor.

    • You should be able to identify the oxygen sensor as a single wire about 3 to 6 inches long. The oxygen sensor is mounted to the exhaust pipe and should slightly protrude from the pipe.

    • The oxygen sensor is an important part of the vehicle exhaust system. The sensor tests the amount of air in the exhaust stream. It then sends this information to the engine control computer, which determines how much fuel is necessary to maintain a proper air-to-fuel ratio.

If this free advice was helpful, a vote with the thumbs up would be greatly appreciated.

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2004 Chevy Impala SS 3.8L Supercharged: I am getting OBD2 codes P0171 (System too Lean (Bank 1)) and P0420 (Catalyst System Efficiency Below Threshold (Bank 1)). I also found an oil leak today. I...

for p0171, try:
In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
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Where is the O2 sensor Bank 1 on a 2005 chevy impala


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Where is the oxygen o2 sensor located on 2004 impala bank 1

I have a 2002 Impala with 3.8L, and just replaced my Bank1 O2.
It is located between the firwall and the middle of the engine, straight down past the spark plugs. Maybe 12 inches from the top of the engine.
As I recall the plug for the sensor is clipped to a bracket at about spark plug level.
I recommend using the crow foot style wrench to remove and install.

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1 Answer

I would like to know the Location of the P0036 on a 2005 Chevy Impala LS. Motor: 3800. Also how to replace it.

P0036....HO2S Heater Control Circuit (Bank 1 Sensor 2)
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