Question about Mitsubishi Montero Sport

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2001 montero sport has 170,000 and the check eng light come on. p0156 bank 2 sensor 2 is bad, can you tell me where is this sensor located at which side of the eng. do i need to replace the front sensor too.

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Bank 2 is the bank of cylinders that does NOT contain the #1 cylinder. That bank is bank 1. Sensor 1 is the oxygen sensor upstream of the catalytic converter, and sensor 2 is the one after the cat.
So it's on the passenger side behind the catalytic converter.

Posted on Aug 04, 2010

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Posted on Jan 02, 2017

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What side is bank 2 on a 2001 mitsubishi montero sport


If engine sits front to back, right side is bank 2. If it sits transverse, rear bank is #2.

May 24, 2015 | 2001 Mitsubishi Montero Sport

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NEED TO KNOW WEAR TO FIND BANK 1 SENSOR 1 ON MITS MONTERO SPORT 3.0 L ENG.


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Aug 10, 2011 | 2000 Mitsubishi Montero Sport

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What sensor (upstream?downstream) is the P0154 code referring to?


P0156 code means :Oxygen Sensor Circuit No Activity Detected (Bank2, sensor1) I'm not sure but i think it's on the exhaust manifold!!! protuha_31.jpg

Feb 11, 2011 | 2001 Mitsubishi Montero Sport 4WD

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Where is the bank 2 sensor1 located in a xls montero sport 3.5 v6


what?? bank 2 is the drivers side of the engine sensor 1 is located before the cat conv next to the frame by the trans bell housing very tight location but is possible to change need a o2 socket that looks like a line wrench but beware if its seized you will have to heat with a torch or you will rip the threads out of the pipe/cat

Jun 08, 2010 | 2002 Mitsubishi Montero Sport

1 Answer

FAULT CODE PO154 AND P0174B ITS ON A 2001 MITSUBISHI MONTERO 3.0 AND WICH ONE OF THE 02 SENSOR IS IT BEFORE THE CAT OR AFTER


The error code should tell you which bank and sensor you are looking for. with that information:

bank one on a montero sport is on the passengers side.
bank two is the drivers side.

sensor one is before the converter,
sensor two is after the converter.

each bank has two sensors. on each bank there is a sensor with a black and a gray connector, and no they will not interchange. connectors are different.

besides disconnect the actual o2 sensor, you can just disconnect the plug to be sure you got the right one. the plugs are hidden in the sides, just follow the cables. you could disconnect the plug of the one that you thing is the wrong one and check again the error code to see if you are getting the same error. if you are getting a different one, then you disconnected the wrong one.

good luck with the change. some wd40 or liquid wrench will help with the removal of the sensor.

Apr 19, 2010 | 2000 Mitsubishi Montero Sport

2 Answers

O2 sensor location


DTC P0156 indicates the output voltage of the downstream Heated Oxygen Sensor (HO2S) is less than some calibratable functional window. The possible causes are:
  1. Pinched, shorted and/or corroded wiring and pins.
  2. Crossed sensor wires
  3. Exhaust leaks.
  4. Contaminated HO2S.
  5. Bad HO2S.
Since you didnt specify the engine size in your vehicle - please see the diagram below for the location of the sensor(s)

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Apr 16, 2009 | 1998 Ford Windstar

1 Answer

Eng check lite


weird. usually an intermitent problem like that for are o2 sensor means that your catalytic converter is starting to cause problems but that should only set a code for sensor 2 not both sensors. sorry i cant be more help

Oct 21, 2008 | 2001 Mitsubishi Montero

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