Where Is The Bank 1 Sensor 2 Oxygen Sensor Located? - Pontiac - Fixya

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Randy Ohler

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Pontiac Master 14,585 Answers
Posted on Feb 25, 2011

Randy Ohler Pontiac Master Level 3:

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Joined: Jun 13, 2010 Answers 14585 Questions 8 Helped 4058336 Points 39686 Follow View Profile Re: Where is the bank 1 sensor 2 oxygen sensor located?

Under the car , in the exhaust pipe behind the catalitic converter. Only thing there with wires going to it.

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Marvin

85242 Answers
Posted on Jun 24, 2009

SOURCE: Replacing bank 1 sensor 2 and bank 2 sensor 1 oxygen sensors

BANK ONE IS THE REAR BANK OF CYLINDERS AND TWO THE FRONT BANK

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Anonymous

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Posted on Oct 17, 2009

SOURCE: where is the bank 2 sensor 1 located.

Oxygen sensors are always numbered like this: Bank 1 sensor 1 Bank 2 sensor 1 Bank 1 sensor 2 Bank 2 sensor 2 some manufacturers use a kind of shorthand that reads different, but means the same thing: 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 Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side. On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1. Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter) Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter. Most GM engines have #1 cylinder located on the left bank, (or Driver's Side) of the engine, So, the answer to your question would be that you are looking for the sensor located before the catalytic converter on the right (or Passenger Side) of the truck.

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John Weathers

409 Answers
Posted on Dec 26, 2008

SOURCE: check engine light come on fault codes PO165 and PO155

Yes sorry but they both should be replaced.

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Anonymous

499 Answers
Posted on Jun 06, 2009

SOURCE: check engine light is on...bank 1 sensor1 oxygen sensor

if u have one oxygen sensor then u need to take a deep look at the bottom of ur car it will be somewhere at the Exhaust pipe if u have a catalytic converter then u will have two oxygen sensors one before the catalytic converter & the other will be after the catalytic converter. Note: the catalytic converter is located at after a little bit of beginning in Exhaust pipe.

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Anonymous

2049 Answers
Posted on Oct 20, 2009

SOURCE: location of the bank 1 sensor 2 O2 sensor on a 2001 ford escape

B1 means the sensor is located on the same bank of the engine that has the #1 cylinder. B2 is located on the opposite bank. S1 means the sensor is located BEFORE the catalytic converter S2 means the sensor is located AFTER the catalytic converter You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks

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