Question about 2005 Nissan Maxima

2 Answers

Catalyst Efficiency Below Threshold (Bank One)

Scan 0420

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

What is catalyst efficiency below threshold ( bank 1 ) mean?

Posted on Aug 19, 2010

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 111 Answers

Might be time for a new Cat , or your O2 sensor isnt readying correctly

Posted on Dec 12, 2008

2 Suggested Answers

  • 478 Answers

SOURCE: catalyst efficiency bank 1 below threshold

before doing anything make sure you have to code for your radio if you have the antilock radio feature!
disconnect the battery wait a few moments I can only give this info for a quick fix this will reset the computer and if it was just a glitch it should be fine after this should it reacour it is a oxygen sensor

Posted on Mar 04, 2010

nicole99wu
  • 1049 Answers

SOURCE: code of PO174 1 system

hi,my friend, you can try,

Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.

Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).

Inspect the downstream heated oxygen sensor (HO2), replace if necessary

Replace the catalytic converter

Posted on Sep 15, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do I fix this problem?


the p 0420 is the HO2S bank 1 or cat converter below efficiency threshold
replace the HO2S first as it is the cheapest then replace the cat converter bank 1
have the accredited auto electrician bench test the alternator and regulator for over voltage

Nov 13, 2015 | 2001 Chrysler PT Cruiser

1 Answer

Where should i find this sensor P0342?


EXHAUST RELATED ERROR CODES

There are 711 possible PO generic DTC error codes. Only 7 of the 711 codes are exhaust related.

PO401: Insufficient EGR Flow

PO402: Exhaust Gas Recirculation (EGR) Excessive Flow Detected

PO410: Secondary Air Injection System Malfunction

PO420: Catalyst System Efficiency Below Threshold (Bank 1)

PO421: Warm-Up Catalyst Efficiency Below Threshold (Bank 1)

PO430: Catalyst System Efficiency Below Threshold (Bank 2)

PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2)

THINGS TO ASK YOURSELF OR YOUR CUSTOMER

Have there been any driveability or performance issues with the vehicle, have there been any recent repairs or tune-up work performed, if so was the check engine light reset and were the codes recorded on previous repair orders.

Do not rely on scan tool data alone. In most applications, the customer will have the check engine light reset prior to repair. If the original cause of converter failure is intermittent, only the catalyst failure code may show up (masking the original reason for converter failure).

Nov 04, 2012 | Chevrolet Epica Cars & Trucks

1 Answer

What does a po430 code mean on a mercury cougar


EXHAUST RELATED ERROR CODES

There are 711 possible PO generic DTC error codes. Only 7 of the 711 codes are exhaust related.

PO401: Insufficient EGR Flow

PO402: Exhaust Gas Recirculation (EGR) Excessive Flow Detected

PO410: Secondary Air Injection System Malfunction

PO420: Catalyst System Efficiency Below Threshold (Bank 1)

PO421: Warm-Up Catalyst Efficiency Below Threshold (Bank 1)

PO430: Catalyst System Efficiency Below Threshold (Bank 2)

PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2)

THINGS TO ASK YOURSELF OR YOUR CUSTOMER

Have there been any driveability or performance issues with the vehicle, have there been any recent repairs or tune-up work performed, if so was the check engine light reset and were the codes recorded on previous repair orders.

Do not rely on scan tool data alone. In most applications, the customer will have the check engine light reset prior to repair. If the original cause of converter failure is intermittent, only the catalyst failure code may show up

Nov 04, 2012 | Cars & Trucks

1 Answer

Jaguar engine code p 0420


The P0420 means Catalyst System Efficiency Below Threshold (Bank 1)
________________
obd2 code reader

Sep 17, 2012 | 2003 Jaguar X-Type

1 Answer

P0430 code


Hi there:

DTC P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
DTC P0430 - Catalyst System Efficiency Below Threshold (Bank 2)

Could be some electrical problem, check wires and harnesses connections (cleaning job); also check description and testing HERE.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Sep 14, 2012 | 2005 Kia Sportage

1 Answer

Servise engine soon code po325 or po420


P 0325 - Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
P 0420 - Catalyst System Efficiency Below Threshold (Bank 1)

Dec 26, 2010 | 1998 Nissan Pathfinder

1 Answer

Check engine code 0420


catalyst below threshold (bank 1) p0420- There are a number of things that could be causing this p0420 catalyst efficiency code. The most common thing is the catalytic converter itself is no longer functioning properly. The other likely thing is the rear O2 (oxygen) sensor is no longer working properly. Other things could include exhaust leaks, damaged exhaust pipes, damaged O2 sensor wiring/connectors, plugged catalytic converter, etc

May 23, 2010 | 2002 Pontiac Grand Prix

2 Answers

1994 grand am


That means Catalyst System Efficiency Below Threshold (Bank 1)

In other words you are polluting the air more than normal, this wont damage the car, but you will get in troubles if you have to go through an emission test.

Regards

May 17, 2009 | 1997 Pontiac Grand Am

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

Related Topics:

576 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

705 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

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

Answer questions

Manuals & User Guides

Loading...