Question about 2004 Nissan Murano

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Code p0057 will not go away

Service engine light will turn off after replacing bank 2 sensor twice; recent repais include new cat converter,exhaust manifold, all sensors,oil change,air filter. cannot psss emissions test. any suggestions will be helpful

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  • Nissan Master
  • 44,437 Answers

Main problem that you have not addressed with the o2 sensor is the fact that the wires have been damaged and that there is a dead short to ground. Probably the wires are severely twisted and a wire has broken and touching the earth wire or the metal body of the sensor.

Posted on Dec 25, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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mx5turbo92
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SOURCE: need to know what bank 1 converter is

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i hope this help let me know.keep posted.

Posted on Jun 04, 2009

  • 30 Answers

SOURCE: 2004 Maxima Se codes P0037 and P0057. It says

the oxygen sensor looks like a spark plug with wires coming out of the top of it. it is screwed into the exhaust pipe near the engine. disconnect the wires and screw it out of the exhaust pipe turning it counterclockwise then screw the new one in and connect the wires. then clear the codes. one word of warning this is one of the most common codes and does not necessarily mean the sensor is bad. often it will appear if the engine is running too rich or lean because of another problem.

Posted on Jun 26, 2009

  • 24 Answers

SOURCE: My 2005 Nissan Pathfinder Service Engine Light

Are you the original buyer? If so I would have contacted nissan because most states have what is referred to as a lemon law. According to Statelawyers.com, Lemon Law refers to the statement from the government that was created to protect consumers from defects in automobile. An automobile that has manufacturing defect(s) or if it requires repeated repairs after purchase and if the automobile is under warranty period, such a vehicle is termed as a lemon.

A law was placed for the benefit of consumers to prevent them from a lemon vehicle. In a nut shell if any vehicle such as a car is under warranty period and is suffering from various defects that prevent a consumer to use the vehicle effectively then Lemon law act or the Magnuson Moss Act comes into force.

Lemon law can be enforced on any sort of vehicle like a car, truck, van, SUV, motorcycle, boat or computer, etc. If any of these consumer durables is found to be defective then the consumer is entitled for either money back, replacement or a cash settlement. The law can be consulted with a Lemon law attorney as various states have different lemon laws. Some states have a lemon law for only the automobiles but some also include other consumer durables like computers, etc.

A dealer or manufacturer should have made number of attempts to repair the vehicle before being declared as lemon. Usually three or more attempts in row over a short period of time are required for any vehicle to be termed as lemon. Lemon law is also applicable to vehicles which have been resold but are still under warranty and meet the mileage and time criteria. More often it is very difficult to persuade a manufacturer to accept a lemon vehicle. In such cases a lemon suit is often called for.

To ensure whether a vehicle is a lemon or not one should observe certain conditions of the vehicle before pursuing a lemon law suit. A vehicle should exhibit some serious defect or some abnormal condition. Such a condition should be covered by manufacturer's warranty. Number of attempts for repair should also be taken into account before preparing a lemon law suit. A written notice should have also been issued to the manufacturer prior to a lemon law suit.

A vehicle that has been bought back by the manufacturer from the customer is known as a Lemon Buy Back. Such lemon buy backs are often sold in auctions as used cars by the manufacturers.

The Lemon law enforced for protecting consumers from the lemon vehicles is Magnuson-Moss Warranty Act. This lemon law states that any advertised guarantee should explicitly state relevant information about a warranty. This law ensures that any warranty for goods above $15 should be clearly expressed on the goods and should be clear and easy to understand. The Magnuson-Moss Warranty act enables a consumer to bring suit to any manufacturer, supplier, warrantor, or service contractor for any defective piece of good or services.

A lemon vehicle explicitly loses market value due to its manufacturing defect. Moreover, manufacturing defects may lead to several life threatening circumstances. It also substantially impedes a person's ability to control or operate a motor vehicle for ordinary use or intended purposes. Any manufacturing defect can also create a substantial risk of fire or explosion. All these risk elements call for enforcement of Lemon law in the states of United States. This law helps consumer from all such threats and hazardous circumstances.

Posted on Jan 05, 2010

johnjohn2
  • 5763 Answers

SOURCE: code PO420 catalyst system efficiency below threshold

you may have a bad converter, its not cleaning the exhaust, but on the other hand a bad rear o2 sensor can also cause this problem,there is a wat to test but you would need a scan tool or scope,replace the other sensor, if light returns then replace the converter, no money lost, if you were to replace the converter the o2 sensors should also be replaced. you have 165000 miles it would be crazy not to replace sensor and install new cat, so basically your just doing it in 2 steps and may get lucky and not need a cat. good luck.

Posted on Mar 05, 2010

Testimonial: "Your information is exactly what I needed to know.I suppose I just did not want to spend the money for a cat. converter. Thanks again for your help. "

  • 752 Answers

SOURCE: i have a 01 nissan sentra gxe, the code came up

Here are the most common problems,

Air leaks at the exhaust manifold or in the exhaust pipes. Catalytic converter is damaged, contaminated or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture. Front HO2S and/or the rear HO2S is loose in the mounting hole. Front HO2S older (aged) than the rear HO2S (HO2S is lazy)

Your vehicle’s computer system2_bing.gif has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. Autozone turning the light off does nothing for you, and is against their company policy. If you do not have the proper tool, reference materials or experience I would take it to a professional. Finding out the trouble code is just he start of the diagnosis process.

Posted on Mar 07, 2010

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2 Answers

What does code PO431 mean on 03 Kia XL. My check engine light is on. Auto zone said I needed to replace Catalytic Converter(s). Does anyone know how many Catalytic Converters are on it?


code p 0431 refers to warm up catalytic converter, bank 2--efficiency below threshold === causes ---cat converter---wiring---HO2S sensor 2
it should be a v6 engine as it has 2 banks , bank 2 is the one closest to the grill.
there should be 2 cat converters ( one for each bank)
from the suggested causes , I suspect that the HO2S sensor is not performing properly and is not providing the correct mixture to the cat converter to make it operate properly
if you bump the cat converter with the hand and it rattles , it will need replacing and autozone would be right
However I am always of the opinion that you should seek other advice from an accredited exhaust specialist shop and get a quote as cat converters are not cheap

Jun 24, 2016 | Kia Cars & Trucks

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I have the code p0139. replaced o2 twice, need to track down the wiring. does anyone have some advice?


code p 0139 refers to heated oxygen sensor (HO2S) 2 bank 1--slow response===causes --heating inoperative--wiring--HO2S
or
oxygen sensor(O2) 2 bank 1---slow response===causes--wiring ---O2 sensor
as you have replaced the O2 sensor twice with no results then it will be the heated sensor that is faulty
heated sensors are the units in the exhaust manifold of exhaust pipe before the cat converter and O2 sensors are the units after the cat converter
It is normally the HO2 sensor that fails and the wiring problem is from not using the correct special socket for installation or removal that causes damage to the fragile wires to the unit

Feb 19, 2016 | 2001 Dodge Stratus

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New exhaust no cst converters chanch sensors twice problem stay p0420


you will need a cat converter to make the system work properly
code p 0420 refers to cat converter system bank 1-efficiency below threshold===causes ---cat converter, ---wiring---HO2S 2 sensor
have you been replacing the correct sensor as they are different in operation

Sep 30, 2015 | 2009 Chevrolet Lumina SS

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Engine Code O2 Sensor Circuit, HV Bank 1, Sensor 2


You did not say what your car was ,however most newer cars use 2 oxygen sensors per bank, if it is a 4 cyl replace downstream o2 sensor,if 6 or 8 cyl bank 1 sensor 2 is downstream sensor on bank that has cyl 1 on it.upstream sensor is in front of catalytic converter downstream is after the cat

Mar 17, 2015 | Cars & Trucks

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What causes my service engine light,abs,trac off light to come on and off


the o2 sensor is the one after the cat converter on the second bank of the exhaust system and needs to be replaced

Dec 11, 2014 | Cars & Trucks

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03 santa fe code p0421 for warm up catalyst below bank 1is it converter sensors whats bank 1 converter location compared to bank 2 is there 2 banks or converters would it be upstream or downstream if it...


If the engine is a V6 (2.7 or 3.5 lit), bank 1 is next to the firewall (right hand) when facing the back of the engine.
If the engine is a 4 cly (I4), there is only one bank and is designated Bank 1 (exhaust manifold).

The catalyst to which the code refers is the UPSTREAM, and there is only ONE upstream cat for any bank.

Clue: Two upstream O2 sensor and two downstream O2 sensors - one before the CAT and one after the CAT. the downstream O2 sensors are identical to their upstream sisters. The only reason for the DOWNstream sensor is to monitor the CAT efficiency (threshold).

The catalyst on either bank is essentially the exhaust manifold which houses the CAT... it is the only CAT to which the code P0421 applies.

Hope that helped

Feb 06, 2011 | Hyundai Santa Fe Cars & Trucks

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Where is the rear "b2 s2" oxygen sensor located in a Jaguar 2003 xtype 2.5liter car? There are 4 oxygen sensors -- one in the front catalytic converter and one next to it by or in the exhaust manifold and...


Oxygen sensors are always numbered like this:
Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2

Some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Hope helps (remember to rate this).

Oct 06, 2010 | 2002 Jaguar X-Type

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2002 blazer zr2 check engine light code is po155 bank 2 sensor 2 where is it and how do I check it


P0155 is o2 sensor heater circuit malfunction bank 2 sensor 1 it is the o2 sensor circuit in front of the cat converter the o2 sensors are located mounted to the exhaust pipe in front and behind the catylic converter the problem is in the circuit [wiring or sensor itself] check wiring and repair if necessary if the short or open circuit is the sensor need to replace sensor +++ P0161 is 02 sensor heater circuit malfunction BANK 2 SENSOR 2 ++++++ this is the sensor behind the cat converter

Feb 23, 2010 | 2002 Chevrolet Blazer

5 Answers

Need to locate o2 sensor location bank 1 sensor 2. I replaced the one on top nearest the radiator, but still getting o2 error code for a different one. Need to find its location on a Hyundai Accent 2000


You need to check two things.

First, there is a heat shield on top of the front of the motor where the o2 sensor you already replaced is. It's got (4) 12mm bolts. Remove it and check the exhaust manifold (big thing you put the o2 sensor into) for cracks. If there are any cracks, you'll get o2 sensor codes. Replace the manifold.

Second, if the manifold is fine start the car and listen to the exhaust pipe under the engine for leaks. Or if you already know the exhaust is loud... that's gonna do it too. A leaking exhaust pipe on an Accent will set secondary o2 sensor codes.

SHOULD you try to change it yourself, you will need a 7/8" wrench, and a new o2 sensor, or flex pipe, or manifold depending on what's broke. Do NOT touch the tip of the new or old o2 sensor to ANYTHING when you take it out or install it or it will be ruined permanently. Run the car until it's at it's normal operating temperature. Raise the vehicle, and take the o2 sensor out of the car (see below to understand which one) using the 7/8" wrench or if you got fancy and bought an 02 sensor tool... use it.

Replace whatever parts are bad (manifold or pipe) or just replace the sensor you need. Then restart the car and take it to a parts store and have them clear the code. The code (and check engine light) won't return right away, it usually takes a few days. If you did everything right you should be good. If not, it's not a terribly expensive job to have done and by now you should be able to explain to them what's wrong based on what you found when you looked at the car. Just tell them everything you checked and what you saw.

Education: I'm not sure where that half baked answer about o2 sensor 1 being near cylinder one came from but here's the real deal.

Sensor 1 is always BEFORE the catalytic converter
Sensor 2 is always AFTER the catalytic converter

Bank 1 and Bank 2 refer to which SIDE of the exhaust on 6 and 8 cylinder engines. Bank 1 is usually left side, Bank 2 is usually right side.

So... O2 sensor B1S1 refers to the O2 sensor BEFORE the converter on the LEFT side of the motor.

Oct 06, 2009 | 2000 Hyundai Accent

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