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


Asked by Dionp973 Apr 02, 2013 at 08:04 PM about the 2001 BMW X5 3.0i

Question type: Maintenance & Repair

Looking for the o2 sensor location

5 Answers


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

3 out of 3 people think this is helpful.

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


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

3 out of 3 people think this is helpful.
Youssef Nassar

The prices of both sensor bank1&2

1 out of 1 people think this is helpful.
Mickey West

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.

Your Answer

Add photo

Related Questions

Looking for a Used X5 in your area?
CarGurus has 11,059 nationwide X5 listings starting at $4,690.

Search BMW X5 Questions

BMW X5 Experts

#1 Tom Demyan
Tom Demyan
Reputation 580
#2 Robert Charlson
Robert Charlson
Reputation 380
#3 Luke Merry
Luke Merry
Reputation 270
View All

Related Models For Sale

Used Mercedes-Benz M-Class"
291 Great Deals out of 11,326 listings starting at $2,500
Used BMW 5 Series"
724 Great Deals out of 17,533 listings starting at $2,500
Used BMW 3 Series"
1,377 Great Deals out of 35,174 listings starting at $1,000
Used Acura MDX"
360 Great Deals out of 12,916 listings starting at $1,900
Used Jeep Grand Cherokee"
1,317 Great Deals out of 54,436 listings starting at $1,500
Used BMW 7 Series"
166 Great Deals out of 5,193 listings starting at $2,450
Used Land Rover Range Rover"
149 Great Deals out of 2,952 listings starting at $3,190

Used Cars For Sale

2001 BMW X5 3.0i For Sale
5 Great Deals out of 70 listings starting at $4,814
2002 BMW X5 3.0i For Sale
7 Great Deals out of 133 listings starting at $4,900
2003 BMW X5 3.0i For Sale
6 Great Deals out of 155 listings starting at $4,690
2004 BMW X5 3.0i For Sale
9 Great Deals out of 156 listings starting at $5,450