Question about 1995 Nissan Sentra

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My 2002 Nissan check engine light will not go out. I've changed the o2 sensor (Bank 1 sensor 1) could it be my computer chip?

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If your getting 02 sensor code most likely the problem is not the 02 sensor you must check what code your getting if your getting a lean that could be anything else like air filter, air flow meter remember on your vehicle has 4 02 sensors I need to know what code is giving you so I can give you more advice.

Posted on Jul 24, 2009

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I have a 2002 Nissan Frontier 3.3l v6 I'm about to change my knock sensor but I also need to change the camshaft position sensor but I'm not positive of where it is located it say bank 1??????


I'm willing to bet you have weak upper O2 sensors & there's nothing wrong with your knock sensor. But if you want, the knock sensor is under the lower intake manifold in the back that is located under the upper intake manifold also called the upper plenum. The lower intake manifold is wedged between the 2 heads and is an enormous pain in the azz to get to. You can check the O2 sensors with a scanning tool that will show you the upper sensors in bank 1 & 2 bouncing electrical current from about .5v to 5v several times per second. Anything less show weak sluggish sensors. The resulting lean mixture causes a knock. Change the sensors and the knock goes away and so does the engine light after you reset it. It took me 6 months to find this problem after replacing everything else including the 6mth old O2 sensors fresh from China. Now I have Bosch. PS The lower sensors went 2 weeks later & I was told any more problems it's the fuel regulator. 2001 Frontier 3.3l v6. No problems since, it purrs like a kitten. I'd suggest the Bosch, it's a special design for that 3.3l engine.

Sep 14, 2015 | Nissan Cars & Trucks

1 Answer

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

Aug 27, 2015 | 2004 Nissan Sentra 1.8

1 Answer

Bank 1 O2 sensor swaped with Bank 2 O2 sensor


Hi Adam, I believe the most cost effective action for you is to get the management system designed for your engine. When doing so it may well be required that you also purchase the wiring harness that goes with the replacement unit. Regards John

Nov 28, 2013 | 2004 BMW 3 Series

1 Answer

How to reset check engine light in a 2004 nissan frontier sc


I use always scanner I heard to disconnect battery for over 5 min.

Apr 04, 2013 | 2004 Nissan Frontier SC

1 Answer

8/2009 computer programming failed, threw a rod and I replaced the engine in my 2001 Nissan Pathfinder. No failsafe mode apparently. I replaced both front O2 sensors and installed a new computer and had...


P0134 and P0154-o2 circuit not actively detected-bank 1 and 2, side 1

Nissan TSB Reference # NTB02-015 (in canada). Might be a similar TSB in the US-also this;

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It does sound like it is an electrical problem, possibly in a harness (damaged) or the ECM had major issues that a reflash could not overcome.

Jan 08, 2011 | Nissan Pathfinder Cars & Trucks

2 Answers

Have check engine light on, getting O2 sensor 1 & 2 heater inop-bank 1&2 rich


change the o2 sensors and have the codes cleared that should fix your problem

Nov 30, 2010 | 2002 Mercury Sable

1 Answer

My car indicates check engine sigh with following two codes 1: p0139 2: p0140


Hi Garcha,

Both codes relate to O2 Sensor # 2

Code P0139: O2 Sensor Circuit Slow Response - Bank 1, Sensor 2
Code P0140: O2 Sensor Circuit No Activity Detected - Bank 1, Sensor 2

A faulty O2 sensor will mean incorrect signals will be sent to the EFI computer, causing erratic engine running.


Cheers,


"If this has helped you in any way, please rate this solution" :-)



Jan 27, 2010 | Hyundai Motor 2002 Elantra

1 Answer

Nissan Maxima 1996 issues-sensors


Dear Gandhi
1) You better check the 'Idle control relay' - and pray this is not your computer - who may be shorted ( The Computer that govern all elec. functions in the car - is also getting signals from your Mothor Mounts' to ensure a more balanced ride' If one or more of the Motor Mounts ( There are 3 ) are defective - they send a signal to the computer - and the yellow light ( Check engine soon) - will appear'
2) A Computer can only be fixed by a Nissan dealer ( est. $750 ) 3) The Idle control valve - can be adjusted too ( Again - by a Nissan Dealer only .
4) It is NOT an easy problem nor cheap . In short - your best bet is with the dealer - and ask them for a diagnostic ONLY ( est. $100 ) Don't tell the dealer what YOU think or did .......just tell them the 'Yellow light comes on' .......they'll take it from there.
Sorry I don't have better news today .

Best of luck
David

Apr 15, 2009 | 1996 Nissan Maxima

2 Answers

2000 nissan quest, service engine light on, idles rough...


sounds like it , the sensor should be on the exhaust somewhere,whith wires on it

Jan 06, 2009 | 2000 Nissan Quest

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