Question about 2005 Chevrolet Impala

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Where is the O2 sensor Bank 1 on a 2005 chevy impala

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Sensor 1 is before the catalytic converter and sensor 2 is after the converter.
Click this link for more help:----
http://technoanswers.blogspot.com/2011/05/where-is-o2-sensor-bank-1-on-2005-chevy.html ------------ This should help.Thanks.Helpmech.

Posted on May 18, 2011

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  • Chevrolet Master
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BANK 1 UP STREAM OXYGEN SENSOR LOCATION IS LOCATED ON THE REAR EXHAUST MANIFOLD.

Posted on May 18, 2011

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Posted on Jan 02, 2017

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SOURCE: Have a 2003 Chevy Impala. Check engine light

Bank 1 is the rear O2 sensor, but experience says to change both. The front one is right behind the engine in the middle of the engine compartment. The rear O2 sensor is on the top of the exhaust pipe, just behind the catalytic converter. But the same code that shows it is the O2 sensor (which is P0420), is the same code for the catalytic converter, or a vacuum leak. Make sure if you do change the catalytic converter, ensure that the new one is OBD-2 compliant. And the vacuum leak could possibly come from the manifold gasket. Let me know what the problem was!

Posted on Mar 26, 2009

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SOURCE: where is the bank 1 sensor 2 o2 sensor for a 96

Oxygen sensors are numbered by which bank of cylinders they serve. Bank 1 is the left or drivers side bank of cylinders on the 4.3L which has the odd numbered cylinders 1,3, and 5. Bank 2 is the right or passenger side bank of cylinders numbered 2, 4, and 6. The Bank 1 Sensor 1 would be the sensor for the left hand side of the engine AHEAD of the converter. Bank 1 Sensor 2 is the sensor for the left hand side bank of cylinders BEHIND the converter.

Posted on Jun 02, 2010

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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

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Where is bank 1 o2 senser located on 2002 chevy impala


That is the downstream sensor.
This picture is the 3.4 engine



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I have a 2001 chevy impala 3.4. I am trying to locate the oxygen sensor. Sensor 1 Bank 1


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
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Only a guess but #1 may be on the left side,you don't do just one if you have more
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Sep 21, 2011 | Chevrolet Impala Cars & Trucks

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I have a 05 chevy impala check engine code p0036 n p0142 bank one sensor two which sensor do I replace


If you have access to a scan tool, check the signal voltage for the Bank 1,3 oxygen sensor with the engine at normal operating temperature. Is it stuck low currently? If so, increase RPM for a few seconds and see if it affects the reading. If it begins working with increased RPM, check for holes in the exhaust near the O2 sensor that may cause a false lean. If the exhaust pipe is intact, the sensor is sluggish, replace it. If the Bank 1,3 O2 sensor voltage reading remains low with increased RPM, unplug it and then observe the reading. It should have increased to about 0.5 volts or thereabouts. If it did, check for water intrusion or other connector problems. If none are found, replace the shorted O2 sensor.

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1 Answer

Where is the location of the o2 sensor in a 2002 chevy impala 3.8l engine?


if you look on the back side of the engine closest to the firewall there will be one in the exhaust manifold. That one will be the bank 1 sensor 1 O2 sensor.

If you look under the car there will be one right after the catalytic converter. That will be the bank 1 sensor 2 O2 sensor

Jul 06, 2011 | 2002 Chevrolet Impala

1 Answer

Where is the location of the bank one sensor one o2 sensor on my 2003 chevy suburban


bank 1 on a chevy is on the drivers side youll have 4 O2 sensors sensor 1 bank 1 is on the engine side of the cat converter sensor 2 bank 1 is after the cat converter (drivers side )
bank 2 is on the passenger side sensor 1 is pre cat sensor 2 is post cat converter

Mar 18, 2010 | 2003 Chevrolet Suburban 1500

2 Answers

03 impala, Car has minimum power 0-30 and then full power...Why?


if it said bank 1 lean, probaly it is an o2 sensor, but if bank 1 and 2 are lean then you have a vacuum leak. a hose or the intake. was there 1 code or more?

Aug 12, 2009 | 2003 Chevrolet Impala

3 Answers

Have a 2003 Chevy Impala. Check engine light remains on. Scan showed O2 sensor. Could it be a vaccum leak?


Bank 1 is the rear O2 sensor, but experience says to change both. The front one is right behind the engine in the middle of the engine compartment. The rear O2 sensor is on the top of the exhaust pipe, just behind the catalytic converter. But the same code that shows it is the O2 sensor (which is P0420), is the same code for the catalytic converter, or a vacuum leak. Make sure if you do change the catalytic converter, ensure that the new one is OBD-2 compliant. And the vacuum leak could possibly come from the manifold gasket. Let me know what the problem was!

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2002 chevy impala o2 location?


it is locared on the driver side on top of the transmision

Feb 26, 2009 | 2002 Chevrolet Impala

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