Where is bank 1 sensor 1 located and bank 2 sensor 1

5

Asked by Apr 02, 2013 at 08:04 PM about the 2001 BMW X5 3.0i AWD

Question type: Maintenance & Repair

Looking for the o2 sensor location

7 Answers

28,965

Its the first sensor in both exhaust pipes. Find where the exhaust manifold connect to the motor and follow it the sensor before the catalytic converters are sensor one on both banks

9 of 9 people found this helpful.
21,845

follow exhaust from one side of engine manifold at engine to the first wired in o2 sensor then do the same on other side.same way. bank one left side bank two right side engine

4 of 4 people found this helpful.
72,495

Bank 1 is your upstream O2 sensor. Usually located in the exhaust manifold. This sensor monitors exhaust gases & tells the computer what's coming out of the engine. The computer uses that information to make constant adjustments to maintain the proper air/fuel mixture for optimum performance & emission control under all driving conditions. Bank 2 O2 sensor is located in the exhaust pipe just after the catalytic converter. Also called the downstream O2 sensor its job is to monitor the catalytic converter. If your computer tests the catalytic converter & it fails it is the downstream O2 sensor that picks up on it & sets a trouble code to alert you the catalytic converter is bad. HTH. -Jim

13 of 13 people found this helpful.
140

The prices of both sensor bank1&2

14 of 14 people found this helpful.
50

Js08016 The Bank refers to the side of the motor. Bank 1 is the side that cylinder number one is on and Bank 2 is the other. Sensor 1 is the upstream sensor and sensor 2 is the downstream sensor after the catalytic converter.

5 of 5 people found this helpful.
70

Where is the fwd O2 sensor located on a 2003 Bmx x5

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Can anyone tell me whether there are more then the Two air filters, I'm aware of which go in the 2006 BMW X5 (E53) 3.0i M54B30 type Sport Activity Vehicle I own. I know of the activated charcoal cabin air filter---I'm not sure though whether it the one goes into box under hood on driver side ... or if it goes into the cowl/firewall of the vehicle. One of the two filters is long and other one is short. My email address is blow45@yahoo.com if you have a link with pics of which ever number total air filters used in the 2006 BMW aforementioned herein above would be greatly appreciated thank you. X5_Zuka_06

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