Question about 2001 Nissan Pathfinder

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I have a 2001 nissan pathfinder, had an engine code saying that tha MAF sensor needed to be changed, did that. Now I am getting codes for all four o2 sensors. They test as if they are working, is their a grounding issue for this vehicle?

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What code is it your getting? Are they heater circuit fault codes? If so, there is likely a common power source, possibly a bad fuse.

Posted on Oct 04, 2010

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1 Answer

What is the problem with my 1995 automatic Nissan Pathfinder?


Have the computer scanned for trouble codes before doing any other work on it. MAF or throttle position sensor or ground leads from engine and trans to body, stuck accelerator cable, broken engine mounts....the causes could be many.......

Feb 26, 2015 | 1995 Nissan Pathfinder

1 Answer

96 pathfinder stalls when engine gets warm


Yes it could be the MAF sensor. And that is one way to check it.
You may want to get a used one to find out. Could be something in the connector or wiring harness too.
Keep in mind when they fail they usually set a trouble code.

Feb 13, 2013 | 1996 Nissan Pathfinder

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Obd code po183


Google bod code P0183 and this will tell you the answer

Oct 24, 2011 | 2005 Nissan Pathfinder

1 Answer

I have a nissan altima 2001. Code for the problem is P0171


Diagnostic Test Code (DTC) P0171 is a "LEAN OXYGEN SENSOR" code.
What this means in plain english is that there is way too much oxygen in your exhaust.

This can be caused by several different things:
> Vacuum leaks (intake gaskets, cracked or broken vacuum hoses, bad PCV valve, etc.)
> Low fuel pressure (weak fuel pump, clogged fuel filter)
> Erroneous sensor input to the computer ( Mass Air Flow (MAF), Engine Coolant Temperature (ECT), or Barometric Pressure (BARO) sensors)
> Fuel injectors sticking closed
> Computer malfunction

This MUST be diagnosed by using a scanner that can read fuel trim data to determine tha cause of the problm as well as to verify the repair.

PLEASE NOTE that this code is VERY UNLIKELY to be caused by the oxygen sensor itself.

Please also review these articles:
Why Is My Engine Light On?

What Else Could Be Wrong?

Aug 27, 2011 | Nissan Altima Cars & Trucks

2 Answers

Vehicle: 1998 Nissan Pathfinder SE V6 3.3L Problem: Vehicle has been hesitating during acceleration and occassionally stalling. After stopping and restarting, vehicle has been extremely hesitant. The...


Hello,
When the MAF on most vehicles reach a point of preventing the engine from starting, you can usually just unplug it and the engine will start. If that doesn't work-
You may want to try having the O2 sensor, ( Oxygen sensor ), checked. It works with other components of the emission system and can cause similar symptoms as the MAF, including preventing the engine from starting.

Donnie

Feb 21, 2011 | 1998 Nissan Pathfinder

2 Answers

Po 140 and Po 138 codes for a Nissan pathfinder 2001


Hello! Which O2 sensor did you change? P0138 and P0140 are indicating Bank #1 Sensor #2... Is this the sensor that was changed? If it was, The sensor is reacting to a different fault...A rich condition will contaminate the sensor; It then generates a fault...Actually the O2 fault is an effect not a cause...

Does the engine run OK? Hard starting, stalls or breaks-up when you give it gas. Give me a little back ground...

There is a common fault on 2001 Nissan's that you can check; Lack of a non-resistive ground to the body...

Use an ohm meter set on the X1 scale...#1 read from negative terminal of battery to body...Then from the engine to the body...Both readings should = Zero ohms...If not .......That's the fault


Guru............saailer

May 22, 2010 | 2001 Nissan Pathfinder

1 Answer

Service engine light on. when checked i get a code that says "knock sensor" and another that says "specific DTC". i need to know what to do about this since i dont know what these codes mean.


Knock sensor codes are very common on Nissan vehicles. This in fact will not set and engine light the onlyway you'll notice it is if the vehicle is scanned and other codes along with the knock sensor code are stored. Can you provide the actual codes that you came up with inorder to help you better.

Nov 16, 2009 | 1997 Nissan Pathfinder

1 Answer

MAF circuit malfunction, replaced the MAF and


P0100 OBD-II Trouble Code

Technical Description

Mass Air Flow (MAF) Circuit Malfunction

Basically this means that there's a problem with the Mass Air Flow (MAF) sensor or circuit.

You will likely not notice any serious driving problems, but there may be symptoms like a general decrease in power or sluggishness.
Causes

A code P0100 may mean one or more of the following:

* The MAF may be disconnected, or a wiring connection may be bad.
* The MAF sensor may be faulty.

Possible Solutions

Use an OBD II Reader (or go tou your local parts store and they will for free) and reset the code and see if it comes back.
Then start with the cheapest, easiest repair procedures:

* Check the Mass Air Flow Sensor wiring/harness is connected properly and that there are no broken / frayed wires.
* Unplug and reconnect the MAF wiring harness a few times to clear the contacts.
* Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information).
* Replace the MAF sensor.

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Oct 16, 2009 | 2001 Nissan Pathfinder

2 Answers

1997 nissan pathfinder shuts off right after starting


There is a relay on the rh passenger side kick panel above the automatic transmission module that is controlled by the ECU through the MAF sensor that controls your fuel to the engine so the air / fuel mixture is correct. I fixed a pathfinder one time with a similar stalling problem.

May 31, 2009 | 1997 Nissan Pathfinder

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