Question about 2005 Nissan Altima

1 Answer

2005 Nissan Altima service engine light came on, Had a reading = P0420, #1 aa1 Large vacumm leak, #2 aa2 Fuel system fault, #3 aa3 Ignition system fault and #4 aa4 Failed Bank 1 catalytic converter. Any ideas?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 237 Answers

One thing you can bet the house on ....if a nissan sets a cat converter code...it needs a cat converter...trust me on this.in the last 10 yrs. as nissan master tech i have seen no other cause!

Posted on Mar 18, 2011

  • Dominguez Apr 02, 2012

    I have the same problem as above...P0420. The cat conv runs about 420..00 plus the exhaust gasket ($15.00 ) and the bearing seal ($15.00), all are dealer prices.

    Do I have to change the oxygen sensors? I heard it has two, one on the cat conv and the other should be the outer sensor. Is this something that I can do without paying a dealer price?

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Air solenoid


If you drive it the fuel milagwe will drop.

Mar 22, 2014 | Mazda RX-8 Cars & Trucks

1 Answer

My 2005 Nissan Altima 3.5 is idling at 800 rpm's, and my service engine soon light came on. The code read for a Chrysler? P1283, and Fuel pump module detected an incorrect low idle, low idle select...


Make sure you are looking up the code properly. 1283 for Nissan indicates a lean condition on bank 2. See link below. A vacuum leak is likely, but make sure the new sensor is recalibrated. Did you perform the relearn procedure after replacing the sensor? If not, see the second link below. If you ran the relearn procedure and cleared all codes but 1283 comes back, look for a loose vacuum line or leaky intake manifold gaskets. P1283 Nissan Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 2 1998 2012 Nissan Altima Clear Mixture Ratio Self Learning Control Data

Jun 21, 2017 | Cars & Trucks

1 Answer

My 2005 nissan altima 3.5 is idling at 800 rpm's, and my service engine soon light came on. The code read for a Chrysler? P1283, and Fuel pump module detected an incorrect low idle, low idle select...


What does a Chrysler product have to do with this fault code, please explain. The meaning of the code is that bank 1 O2 sensor is defective.

Jun 21, 2017 | 2005 Nissan Altima 3.5

2 Answers

P0446 code 1998 gmc jimmy how do I fix this? where is it located?


Hi there:

A code P0446 could mean one or more of the following has happened:
- Faulty vent valve
- Open, short or excessive resistance on Vent valve control circuit
- Blockage of vent valve
- Bad PCM




With a P0446 OBD-II trouble code, here are some things to try:
- Replace Vent valve
- Repair open, short, or resistance problem in control circuit
- Repair open, or short, or resistance problem in power circuit

- Replace PCM




Hope this helps.

May 30, 2012 | 1998 GMC Jimmy

1 Answer

How do I fix P0442?


check the egr, common reason for this code, that is not listed in the solus

Mar 01, 2012 | 2005 Kia Sorento

1 Answer

I have a honda accord and I went to Auto Zone and they did a diagnostic check results were P0420 and the following; aa1-A/F ratio concern aa2- air leak near HO2S Heated oxygen sensor aa3- ignition...


More than likely the catalytic converter has failed. the computer looks at the downstream O2 sensor to determine if the cat is working. If it sees the downstream O2 starting to switch back and forth like the upstream O2 or read consistently higher than it should than it will flag the P0420 code.

Aug 31, 2011 | 1999 Honda Accord

1 Answer

2001 Elantra. I have had a tune up and replaced a flexpipe, also used carb cleaner in the gas tank, but still experience a rough idle and check engine light is on. It would go off for the better part of...


I would try replacing the fuel injector ,now the mechanical code,could be a valve spring, lifter ,or valve problem,but try the injector first.

Jun 10, 2010 | 2001 Hyundai Elantra

1 Answer

Check engine light on. took the car to auto zone to put it on a scanner. trouble code p0420. catalyst system efficiency below threshold. probable cause; large vaccum leak, fuel system fault, ignition...


Diagnostic code produces P0420 catalyst system efficiency below threshold-Bank 1. Probable causes are listed as follows:
1-air leak in exhaust before rear 02 sensor, 3-Fuel system fault,
4-faulty catalytic converter.

May 31, 2010 | 2001 Nissan Altima

Not finding what you are looking for?
2005 Nissan Altima Logo

525 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

713 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...