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DTC Code P0430 Is it my bank 2 sensor or my cat. ?

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WOW, THAT CODE IS FOR ALL THAT.
EXHAUST FAILURE, CATALITYC FAILURE AND O2 FAILURE.
I WILL SAY TO REPLACE THE O2 SENSOR WICH IS THE CHEAPEST WAY AND SEE IF THAT;S THE PROBLEM. BTU FOR TIME AND AROUND 120,000 MILES THE CATALITYC GOES BAD.
BUT I WILL GO FIRST WITH THE O2 SENSOR.
IF YOU CAN'T FIND A GOOD DEAL LET ME KNOW I CAN GET THEM CHEAP " AROUND $ 60.- "

Posted on Jun 11, 2008

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P0430 code


P0430 is a catalytic converter efficiency code . You need a catalytic converter . OR run 4 0r 5 bottles of a product called cat-a- clean . One bottle per tank full , may clean it up.

Mar 29, 2016 | Cars & Trucks

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What are the probable causes of DTC P0430?


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)

Mar 27, 2016 | 2001 Nissan Sentra

1 Answer

What is check engine code P0430?


DTC P0430: Catalyst system efficiency below threshold (bank 2). Probable cause:
1. Faulty sensor or solenoid
2. Damaged or corroded connector terminal contact
3. Wire harness fault. Check for correct voltage, open, short to ground, short to voltage
4. Control unit software needs to be updated
5. Faulty PCM or ECM
6. HO2S sensor contaminated/damaged
7. Exhaust leaks or restrictions
8. Catalytic converter damage
9. Incorrect catalytic converter operation

Sep 15, 2014 | 2006 Nissan Pathfinder SE

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I have a 2003 Nissan Pathfinder. I Have a CEL on P0430 CAT code for back 2 . There are 4 Cats on the vehicle, 2 on each side how do I figure out which one to replace?


Here's a link to your firing order,the number one cylinder is where the number one sensor is,in the exhaust manifold,the other sensor on that side is by the cat,and the number 2 cylinder is where the number 2 sensor is in the ehaust manifold and other is by the cat on that side. Specifications Firing Order AutoZone com Here's a more detail look. Repair Guides Engine Control Systems 1998 Dtc P0133 right Bank b1 P0153...

Jul 21, 2014 | 2003 Nissan Pathfinder

1 Answer

Nissan pathfinder p0430


A code like yours may mean that one or more of the following has happened: The catalytic converter is no longer functioning properly An oxygen sensor is not reading (functioning) properly There is an exhaust leak Possible So

Jul 20, 2014 | 2003 Nissan Pathfinder

1 Answer

Error Code P0430


this is the o2 sensor after the pre cat so post cat you can get a tune to get rid of code or replace the o2 sensor or get spacer that screws into the cat witch will make it not code the o2 sensor is there to just make sure the cat is there for emissions and will not effect the gas milage

Jul 15, 2014 | 2004 Audi TT

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

Toyota camry has engine code P0430 cat ineffiency. .We just had car repaired for evaporative leak codes > They replaced one of the evap sensors. now they are telling me a cat is bad


Bank 2 is in the front of the engine compartment (closest to the radiator). Sensor 2 is downstream (after) the catalyst. Follow the exhaust system down and replace the one after the cat. If you have an graphing OBD2 scan tool- graph both the bank 1 sensor 2 and bank 2 sensor 2 and compare their wave form. If bank 2 sensor 2 is cycling up and down more so than bank 1- you likely DO have a failed or failing precatalyst.

Mar 03, 2011 | 2002 Toyota Camry

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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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2002 Hyundai Sonata code reads P0430 what does this mean Catalyst System Efficiency Below Threshold (Bank 2)


That's a pretty RELIABLE code!... You have a bad CAT (Catalytic Converter). Trust it to be accurate. The conditions which set this code is when the Upstream O2 sensor's data/signal is compared to the Downstream sensor's data/signal... when they are nearly identical, that's when this code is set (unless you have an exhaust leak).. If there is an exhaust leak.. repair it, then retest/recheck.

May 08, 2009 | Hyundai Sonata Cars & Trucks

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