Question about 2001 Nissan Sentra

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What are the probable causes of DTC P0430? - 2001 Nissan Sentra

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Code p 0430 refers to catalytic converter system , bank 2 --efficiency below threshold=== causes --cat converter---wiring---HO2S 2
( that is the sensor in the exhaust manifold or pipe before the cat converter for bank 2--front bank)

Posted on Mar 27, 2016

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: error code on 2001 sable P0304 and P0430

Replace the Oxygen sensor

Posted on Feb 24, 2009

cj2176
  • 520 Answers

SOURCE: Where is the blower resistor on a 2001 Nissan Sentra?

Its actually not that bad to change. If you open the glove box and remove the screws then the screws along the bottom of the glove box at the bottom of the dash the box will slide out. Remember to disconnect the light if it has one. Now you will be able to see the underside of the dash. You can see a large black box that has wires and vacuum lines all over. You need to locate a small flat plate with two screws and a plug in the middle. Disconnect the plug and remove the screws. The resistor will come straight out. The back side will look like small coiled up springs of different sizes. Install in reverse.Hope this helps. Good luck. Please re-post with updates. Thanks cj2176.

Posted on Jul 13, 2009

  • 14 Answers

SOURCE: i have a 2001 nissan sentra xe and my check engine

PO 455- Evaporative emission control System leak detected (check exhaust system, egr valve, or entire intake and exhaust system)


PO440- Evaporative Emission System Malfunction (also check oxygen sensor)

Posted on Jul 13, 2009

pal03246
  • 726 Answers

SOURCE: Nissan Sentra 2001 gxe with code p0420

You will need a new catalytic convertor assembly. Yours is below treshold efficiency in other words its "no good".If you have it replaced, ask the garage/dealer to give you the old one back. Its worth some cash if its full. It doesn't matter thet it failed. They are going after the mesh inside of it and that is worth some $$$$. May not be much , but better than nothing.

Posted on Jul 26, 2009

drsinister69
  • 2317 Answers

SOURCE: service engine code P0302 2000 nissan sentra

I would check that spark plug, and have that coil checked or replaced. Also check for any vacuum hose leaks in the area of the cylinder.

Posted on May 12, 2010

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06 Cadillac STS V8 car has codes P0174 and P0420.


• DTC P0171 Fuel Trim System Lean Bank 1
• DTC P0174 Fuel Trim System Lean Bank 2
.
The engine control module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Fuel delivery is controlled differently during Open and Closed Loop. During Open Loop, the ECM determines fuel delivery based on sensor signals without oxygen sensor (O2S) input. During Closed Loop, the O2S inputs are added and used by the ECM to calculate short and long term fuel trim (FT) fuel delivery adjustments. If the O2S indicates a lean condition, FT values will be above 0 percent. If the O2S indicate a rich condition, FT values will be below 0 percent. Short term FT values change rapidly in response to the heated oxygen sensor (HO2S) voltage signals. Long term FT makes coarse adjustments in order to maintain an air/fuel ratio of 14.7:1. If the ECM detects an excessively lean condition, DTC P0171 or P0174 sets.
Diagnostic Aids
• Excessive resistance in the fuel injector ignition 1 voltage circuit or the fuel injector control circuit may cause the following symptoms:
- Lean condition
- Misfire
- Rough idle
• The system will go lean if an injector is not suppling enough fuel.
• A lean condition could be present during high fuel demand.
• A malfunctioning MAF sensor can cause this DTC to set. Refer to DTC P0101 .
• Review the Failure Records with a scan. If an intermittent condition is suspected, refer to Intermittent Conditions .

DTC Descriptors
This diagnostic procedure supports the following DTCs:
• DTC P0420 Catalyst System Low Efficiency Bank 1
• DTC P0430 Catalyst System Low Efficiency Bank 2

This code could mean the catalytic converter on that bank has failed .

Causes of lean condition trouble codes P0171 P0174 GM 5 3L

P0420 P0430 catalytic converter catalyst inefficiency code diagnosis

Mar 28, 2018 | 2006 Cadillac STS

1 Answer

2004. What are the probable causes of DTC P0430?


Here's the crux of the problem, something is plugged up somewhere and is keeping your catalyst from performing properly. I suspect that the exhaust manifold may be leaking big time and because it is, the pressure flow to the cat isn't what it should be. It's possible that a piece has been blown out of the head gasket and your engine is performing poorly. In fact, I would suggest that you run this down as it seems the most likely cause.

Because your car is hesitating and rattling when you are accelerating I suspect that the engine's pressure levels are all over the place due to the head gasket.

If you have the tools available, you can check it out yourself, but given the complexity of the Amanti's engine, I would suggest leaving it to a trained technician.

Feb 13, 2014 | Kia Amanti Cars & Trucks

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

Code p0430


This is an emissions DTC, you can get help with this link on how to trouble shoot an solve your problem http://www.obd-codes.com/p0430

Aug 30, 2012 | 2005 Cadillac Escalade Ext

1 Answer

98 gmc sierra 1500 5.7 po430 code


Below is a general description of the problem. Check the following possibilities and we can go from there.


DTC

P0430 - Catalyst System Efficiency Below Threshold (Bank 2)

Description
Indicates Bank 2 catalyst system efficiency is below the acceptable threshold.

Possible Causes
Use of leaded fuel
Damaged Oxygen Sensors
Malfunctioning ECT
High fuel pressure
Damaged exhaust manifold
Damaged catalytic converter
Oil contamination
Cylinder misfiring
Downstream Oxygen sensor wires improperly connected
Damaged exhaust system pipe
Damaged muffler /tailpipe assembly
******** spark timing

Dec 11, 2011 | 1999 GMC Sierra

2 Answers

I have p0420 on my 06 pont gp gt. it mostly comes on after I slow down after highway


Here is the trouble tree for that code it is most likely a bad cat but follow the trouble tree to see where it lead's you.
DTC P0420 or P0430

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Diagnostic Starting Point - Vehicle
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0420

* Catalyst System Low Efficiency Bank 1

Important: A new converter with less than 100 miles on it may set DTC P0420 or P0430 due to out-******* of the internal matting. Operating the vehicle at highway speeds for approximately 1 hour may correct the condition. Hope this helps

Feb 01, 2011 | 2005 Pontiac Grand Prix

1 Answer

Dtc for a 2002 crown victoria codes are 430,113


HELLO the code po113 is for intakeair temp sensor this sensor is in the air flow meter sensor . p0430 is for catalytic efficiency .you should first clear codes and see if they come back

Dec 23, 2010 | Ford Crown Victoria Cars & Trucks

1 Answer

Getting OBD codes p0420 and p0430, how to fix these issue with my 2001 Audi A6


2001 Audi A6
EOBD code: P0420
Fault location: Catalytic converter system, bank 1 - efficiency below threshold
Probable cause: Catalytic converter, wiring, heated oxygen sensor 2 (downstream)

EOBD code: P0430
Fault location: Catalytic converter system, bank 2 - efficiency below threshold
Probable cause: Catalytic converter, wiring, heated oxygen sensor 2 (downstream)

Sep 14, 2010 | 2001 Audi A6

1 Answer

What is P0430 trouble code


Code P0430 - For Continuous Memory Only -- Check for missfire detection monitor (dtc) -- Bank 2 catalyst system effciency is below acceptable threshold -- possible causes are
-Faulty HO2S
-Faulty ETC sensor
- High Fuel Pressure
- Damaged exhaust components
- Oil Contamination
- Cylinder Missfire
- Downstream O2 sensor improperly connected
- Retarted Spark Timing
Most times the problem is the Downstream O2 sensor is defective

Dec 08, 2009 | 2002 Ford Escape

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