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Where is the oxygen sensor located on a 01 olds aurora 3.5 engine

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  • Cars & Trucks Master
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The sensors are in the exhaust pipes. Should be one on each side and a third mounted after the catalytic converter.

Posted on Jul 14, 2013

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SOURCE: 01 olds aurora

bank 1 sensor 1 will be in exhaust manifold by firewall in the middle. bank 1 sensor 2 will be behind convertor .bank 2 sensor 1 will be in the front manifold down at the end of it

Posted on Aug 20, 2008

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SOURCE: 01 olds aurora 4.0 low coolant light on. Where is

The coolant level sensor is inside the coolant bottle. It is not replaceable separately. You will have to replace the reservoir to replace the sensor.

Posted on Sep 07, 2010

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I need to know the location of the crankshaft position sensor and the heated exygen senor (bank 2 sensor 1) on my 98 oldsmobile aurora


Which crank sensor ? yours has two .
Crankshaft Position (CKP) Sensor A
Center front of the engine, near the base of the engine oil level indicator
Engine Controls Component Views
Engine Controls Connector End Views
Crankshaft Position (CKP) Sensor B
Center front of the engine, near the base of the engine oil level indicator
Engine Oil Level Switch
Center front of the engine, in the engine oil pan
Front Heated Oxygen Sensor (HO2S) (Bank 2 Sensor 1)
Center rear of the engine, in the right hand exhaust manifold

Aug 19, 2015 | 1998 Oldsmobile Aurora

2 Answers

Where is the o2 sensor 2 bank 1 on a 2003 olds aurora?


Bank 1 is closest to rear of engine compartment Sensor 2 is post catalytic convertor or after cat

Nov 26, 2014 | 2003 Oldsmobile Aurora

1 Answer

Where is the 02 sensor number 3 located


That would be the oxygen sensor in back of the catalytic converter. Sensors 1 and 2 are in the exhaust near the engine, one on each side or bank of the engine, and number 3 sensor will be in the exhaust after the cat. The purpose of number 3 sensor is to monitor the efficiency of the catalytic converter.

Oct 25, 2013 | 1999 Oldsmobile Aurora

1 Answer

I just replaced both o2 sensors pre-cat converter and can't clear the service engine light on an 01 yukon. I tried pulling the fuse, disconnect battery with no luck. In research I noticed that the dealer...


I think you need Bosch for that vehicle. here is a rundown how it helps


Every automobile manufactured after the 1980s is equipped with an oxygen sensor. This component measures the ratio of air and gasoline in the engine and feeds the data to the vehicle's computer. With an oxygen sensor, your engine runs more efficiently and produces as few emissions as possible. If your car's running with a busted oxygen sensor, you better get a new one before your engine's efficiency takes a nosedive and your gas bills skyrocket. We know that looking for the right replacement oxygen sensor can be very tricky, that's why we've come up with a guide for you to keep in mind when shopping for a new oxygen sensor.
Which oxygen sensor should you buy?
There are a lot of questions about which oxygen sensor to replace. In fact, failures are common among cars especially when the wrong sensor is installed. With today's automobiles equipped with at least two, or even three or four oxygen sensors, it can be very confusing as to which one is not working correctly. There are probably a lot of sensor codes to choose from and here's a tip to help you sense the right oxygen sensor.
Oxygen sensors are always numbered this way:
Bank 1 Sensor 1
Bank 2 Sensor 1
Bank 1 Sensor 2
Bank 2 Sensor 2
Other manufacturers code their oxygen sensors this way, which is why it can sometimes be very confusing. However, they all mean the same:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2
Now here's a detailed list to know which is which:
  • Bank 1 is located at the side of the engine where cylinder #1 is found as well.
  • Bank 2 is on the opposite side of Bank 1.
  • On a 4-cylinder engine, there is only one bank that's called Bank 1.
  • Sensor 1 is the upstream sensor located before the catalytic converter.
  • Sensor 2 is the downstream sensor located after the catalytic converter.
  • Sensor 3 is the only downstream sensor in situations where there are two sensors before the catalytic converter and only one after it. On other cars, this is read as Bank 1 Sensor 3.
With these detailed tips on how to sense the right oxygen sensor, you'd be sure to buy the right replacement part at your store. Be sure to purchase one from a trusted brand to avoid any complications you might experience with ones that are bought from local junkyards BEST OF LUCK

Aug 26, 2013 | Dodge Grand Caravan Cars & Trucks

1 Answer

I got a 2001 Oldsmobile aurora that the code reads PO301


well that code means ur have a missfire in cylinder one change the wires for the spark plugs that really the only thing i can think off beacuse you have already done the spark plugs and the oxygen sensors and the coil packs

Feb 26, 2013 | 2001 Oldsmobile Aurora

2 Answers

01 olds aurora 4.0 low coolant light on. Where is the sensor located?


The coolant level sensor is inside the coolant bottle. It is not replaceable separately. You will have to replace the reservoir to replace the sensor.

Sep 07, 2010 | 2001 Oldsmobile Aurora

1 Answer

I need to know where is the oxygen sensor locatted on the oldsmobile aurora 2002


follow the exhaust pipe from the manifold on the engine and you will find it before you reach the middle of the car.

Sep 07, 2010 | 2002 Oldsmobile Aurora

1 Answer

How many oxygen sensors are in my 95 oldsmobile aurora? and where are they located?


LOCATIONS There are different locations in the exhaust system where O2S sensors are positioned. The locations have been given numbers and will be used in the accompanying charts to identify the positions of O2S sensors in most vehicles. Due to mid-year production changes or factory inconsistencies, all models may not be covered. If a vehicle being serviced is not covered in the charts, inspect the exhaust system (while cold!) in the general locations to find the applicable O2S sensors. NOTE: If equipped with dual exhaust systems, there may be up to 4 or 5 O2S sensors in the exhaust system. Be sure to locate all of them before commencing with any testing or service. Fig. 1: Location No. 1 — down pipe or exhaust manifold 79248g01.gif
Fig. 2: Location No. 1 — typical O2S sensor located in the exhaust manifold 79248g04.gif
Fig. 3: Location No. 2 — left and right banks of a V-type engine 79248g02.gif
Fig. 4: Location No. 3 — exhaust collector (where more than one pipe joins together) 79248g05.gif
Fig. 5: Location No. 4 — outlet of the catalytic converter 79248g06.gif
Fig. 6: Location No. 5 — inlet and outlet of the catalytic converter 79248g03.gif
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Jul 03, 2010 | 1995 Oldsmobile Aurora

1 Answer

On my 97 Olds Aurora, I'm having trouble passing emissions. An oxygen sensor is malfunctioning, I have had my codes read and they say it's the bank 1 sensor 1. But I just replaced the very first oxygen...


The bank 1 sensor should be the one before the CAT on the side of the engine that includes cylinder #1. If you're not sure which bank that is, look across the heads from the side of the engine (front of the car) The bank with #1 on it will have the head a little (1"-2") more towards the front of the engine. The bank that has the head set back a bit will be #2. When there are sensors after the CAT, they're not oxygen sensors, they're CAT efficiency sensors.

Nov 25, 2009 | 1997 Oldsmobile Aurora

1 Answer

01 olds aurora


bank 1 sensor 1 will be in exhaust manifold by firewall in the middle. bank 1 sensor 2 will be behind convertor .bank 2 sensor 1 will be in the front manifold down at the end of it

Aug 20, 2008 | 2001 Oldsmobile Aurora

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