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William Scott Posted on Nov 17, 2019
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2004 Nissan Maxima 3.5L- I need to know where is the air fuel ratio sensor, Bank 1 Sensor 1 is located at and how to remove it? Need to see a diagram, picture.

Have a OBDII codeDTC P1274 come up. Need to know if it can be tested. Trying to get the car smogged.

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Eugene Davis

Eugene Davis

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  • Expert 200 Answers
  • Posted on Nov 18, 2019
Eugene Davis
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It is at firewall side of engine it is also called o2 sensor, it is screwed into the manifold close to top of engine.

5 Related Answers

Anonymous

  • 625 Answers
  • Posted on Jun 20, 2008

SOURCE: O2 sensor wiring diagram for 2004 hyundai sonata

there is two wires then suposed to be same color they are not what you looking for but if you have a grey and a black wires it willl be one of those i hope and this help

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daves944

Dave C

  • 1050 Answers
  • Posted on May 10, 2009

SOURCE: 2004 suzuki verona..where is bank 1 senor 1 located on the engine

This car has a transversely mounted straight six I believe, which is really unusual, but that means it only has one bank, so "bank 1, sensor 1" will be the upstream O2 sensor (between the engine and the cat) and "bank1, sensor 2" will be the downstream sensor (behind the cat).

LOS COMPUTER REPAIR

  • 27 Answers
  • Posted on Jul 01, 2009

SOURCE: WHERE IS THE CAM POSITION SENSOR LOCATED ON A 2004 NISSAN MAXIMA

WHEN YOU STAND ON THE FRONT OF THE CAR YOU ONE IS RIGHT BELOW OF THE INTAKE WHICH IS BANK 2 OR THE ONE CLOSE TO FIREWALL , BANK 1 ONE IS ON SAME SIDE NEXT TO THE RADIATOR BUT THEY BOTH ON THE CAM RIGHT SIDE OF THE ENGINE, THE EASIEST WAY TO IDENTIFY THEM IS THAT THEIR CONNECTOR IS GREEN, ONCE YOU LOCATE THEM THE CLIP NEEDS TO BE PUSHED DOWN TOWARD THE SENSOR FOR THE CONNECTOR TO BE RELEASED, ONCE YOU REMOVE THE CONNECTOR THERE WILL BE ONLY A 10MM SCREW HOLDING THE SENSOR PULL IT OUT , THE SAME SETTING THE NEW ONE PUSH IT ALL THE WAY IN , THIGHT THE 10MM SCREW, CONNECT IT BACK AND YOU'RE DONE,BUT FOR THE ONE ON THE BACK SOMETIMES MIGHT BE NECESARY FOR YOU TO TAKE THE INTAKE OFF....HOPEFULLY IS NOT YOUR CASE....



Good luck!!! and if you need the crank for hard starting on hot/warm, it is located on the botton middle section on the transmission is the only cable that goes down to a small piece of metal and it is held by a 10mm screw only to protect the sensor, you will se the sensor once you remove that small about 6-8 inches piece of metal. Then you'll be able to unescrew the 10mm screw that holds the crank position sensor. when you pull it off you'll be able to see the fly wheel inside the transmission...



you all enjoy your rides out htere!!!

Anonymous

  • 265 Answers
  • Posted on Feb 05, 2010

SOURCE: 1996 Nissan Maxima o2 Sensor Location

check out www.maxima.org

Anonymous

  • 237 Answers
  • Posted on Apr 30, 2011

SOURCE: Where is bank 2 located for the camshaft position

bank two is the bank of cylinders that is closer to the radiator...not the firewall side.

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0helpful
1answer

1997 Nissan Maxima. Location of O2 sensor, Bank 1 Sensor 2 please.
In this link

https://www.nissanhelp.com/diy/maxima/projects/1996_2003_nissan_maxima_o2_sensor_location.php

and another full diagram here.

https://maxima.org/forums/attachments/4th-generation-maxima-1995-1999/52083d1501528200-bank-1-sensor-2-will-fit-nissanpartszone_0011.jpg

and the text

https://maxima.org/forums/4th-generation-maxima-1995-1999/647492-bank-1-sensor-2-will-fit.html
Read full answer
Jan 16, 2022 • Nissan Cars & Trucks
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1answer

OBDII code-P1274, Is it a Nissan factory manufacturer code? On a 2004 Nissan Maxima 3.5L
Trouble code P1274 in a Nissan Maxima is defined as Air/fuel sensor reading a rich fuel mixture. It also points to the upstream AF sensor on Bank 1 (the side of the engine near the firewall). The AF sensor is also referred to as the oxygen sensor located on the exhaust manifold before the catalytic converter. Depending on how many miles the car has, this sensor might need replacing. Technicians do recommend replacing both upstream sensors as the AF sensor on Bank 2 (the side of the engine near the radiator) might go bad as well. Other causes of trouble code P1274 are faulty injectors, improper fuel pressure, or a malfunctioning Mass Airflow Sensor.
If you wish to clear the codes temporarily, simply disconnect the negative battery cable. Wait a couple of minutes, then reconnect. If no repair was performed, the trouble code light might return after a few miles of driving. State Inspection requires that all monitors are ready during emissions testing, so make sure that you have completed a drive cycle (about 3 days or 50 miles of driving) before submitting the vehicle for an emissions test.
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Aug 09, 2019 • Nissan Cars & Trucks
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1answer

My 05 Altima 3.5L popped up ABS, O2sensor, P1800 &P1273 frm the Auto Scan what do these mean & how to fix them?
P1800 is the VIAS system. Most likely the intake runner control vacuum actuator is defective. Where did you get the ABS info?
P1273 NISSAN - Air Fuel Ratio Sensor 1 Bank 1 Lean Shift Monitoring.
 Possible causes - Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
-Intake manifold or vacuum hose leaking (check this first)
- Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
- Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
- Fuel pressure
- Faulty Fuel injector
- Faulty Air Flow Meter
If all seems ok then replace the cylinder bank number one O2 sensor and the bank two sensor, replacing only one sensor can lead to another check engine light. These are the sensors before the catalytic converter.
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Nov 11, 2016 • Cars & Trucks
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1answer

Where would the af sensor be located on my 2004 nissan maxima
your maxima has 2 a/f ratio sensors. they are both screwed into the exhaust manifolds. bank 2 which is the front bank by radiator has sensor clearly visible right by the fans. bank 1 is a pain in the rear to replace, because of its location by the firewall. you will need to perform "self learn reset" procedure after replacing the a/f ratio sensor, or the code will come back on, even tho you don't have an issue with the sensor. reset procedure gets done with nissans consult scanner.
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Jul 26, 2016 • 2004 Nissan Maxima
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1answer

How fixed p 1148 nissan armada 2008
It may be a faulty oxygen sensor.
For Models 2005 and up:
- Faulty Air Fuel Ratio Sensor 1 Bank 1
- Air Fuel Ratio Sensor 1 Bank 1 circuit is open or shorted
- Air Fuel Ratio Sensor 1 Bank 1 circuit electrical connection

Before you rush off to buy replacement parts it's worth giving a mobile mechanic a call. Those guys are usually very good and far cheaper than a dealership. And a second opinion is worth paying for.
P1148 and P0031 Problem
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Mar 16, 2016 • Nissan Cars & Trucks
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1answer

Code p1273 on a 2005 Nissan altima
Robert, Code P1273 Air Fuel Ratio, Sensor 1 Lean, Shift Monitoring Bank 1
See links below for trouble shooting and fix.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

P1273 Nissan Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1

The dreaded P1273 Code 2005 2 5S

p1273 Nissanhelp com Forums

https://ca.answers.yahoo.com/question/index?qid=20140225092422AAZkNxF
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Mar 04, 2016 • Nissan Cars & Trucks
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1answer

P1273 Manufacture contr fuel air metering 2004 nissan sentera
P1273 Nissan P1273 Nissan - Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1 Possible causes
- Faulty Air fuel ratio (A/F) sensor 1 Bank 1
- Faulty Air fuel ratio (A/F) sensor 1 heater Bank 1
- Fuel pressure
- Faulty Fuel injector
- Intake air leaks
- Faulty Air Flow Meter
Most probable is you have a bad heater in your upper bank 1 O2 sensor. Replace all of your O2 sensors.

Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgP7CTD8
Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgOwiMU8
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Aug 27, 2015 • 2004 Nissan Sentra 1.8
1helpful
1answer

What is a P015A code? and what do I need to do to fix it?
More then likely you need a O2 sensor !Don't know what make vehicle you have so I checked a couple an they all came up same thing , slow response bank 1 sensor 1 ! And O2 sensors are different from air fuel ratio sensors !

OBDII Code P015A NISSAN SENTRA Air Fuel Ratio Sensor 1 Bank 1 Circuit...
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Apr 16, 2015 • Cars & Trucks
1helpful
1answer

Hello, Where is the Cam position sensor located on a 2004 Nissan maxima bank 1 located?
3.5litre V6 Front wheel drive, the cam position sensor is in the back of the cylinder head above the transmission. bank one is the front bank, nearest to the grill. the cam sensor is held into the head with a 10mm bolt, has one wireing connector with 3 wires in it. the sensor is sort of round with a leg off one side for the bolt the secure.
may need to remove the engine cover to see it. it is held down with allen key bolts.
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Mar 25, 2011 • 2004 Nissan Maxima
9helpful
2answers

P0171B
It means that your engine is running lean - not getting enough fuel for the amount of air that the engine is receiving. Because your maxima is equipped with a V-6 engine, whatever the problem, it is affecting only bank #1. Bank #1 is always the side of the engine where cylinder #1 is located, or in your case, the left side of the engine as it is viewed while facing the crankshaft end of the engine.
(on a 4 cylinder engine, there is only one bank and it is always referred to as Bank #1)
There are several things that can cause a lean condition including vacuum leaks, a malfunctioning Evaporative Emissions system, a misfiring cylinder (due to bad plugs, bad injectors, or an intake or head gasket leak.), a malfunctioning Mass Airflow sensor (MAF) or Manifold Absolute Pressure sensor (MAP) or even a bad Oxygen sensor (O2s) (Nissan sometimes calls an O2s an "Air-Fuel Ratio Sensor") It is even possible for a leaking vacuum brake booster to cause a lean code.
If there are any other malfunction codes present, it may help to pinpiont the cause of the lean code. (Like a P0301 "cylinder#1 misfire detected", in which case, you would address the misfire code first.)
Certain problems, like a leaking brake booster or a bad MAF will usually set lean codes for BOTH banks.
If the P0171 is the ONLY code present, the most likely cause is a bad O2s, but I recommend some diagnostic testing to prove it before spending the mega-bucks that Nissan gets for their O2 sensors.
Read full answer
Oct 10, 2009 • 2000 Nissan Maxima
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