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Code p0430 catalyst system low efficiency bank 1

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Car sometimes will not start after sits for a day


Definition of Diagnostic Trouble Code P0420 Category: Powertrain Definition: Catalyst System Efficiency Below Threshold Bank 1Note: This definition of P0420 is applied to all manufacturers

Definition of Diagnostic Trouble Code P0430 Category: Powertrain Definition: Catalyst System Efficiency Below Threshold Bank 2Note: This definition of P0430 is applied to all manufacturers

As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. If the P0430 code is combined with other codes, try fixing the other codes first.

Jul 11, 2015 | 2006 Toyota Solara

1 Answer

Bmw x5 4.4i code p0430


p2187 system too lean bank 1
p2189 system too lean bank 2
p0430 catalyst stem efficiency below threshold bank 2

You have some air leak. Gaskets/broken hoses.

Mar 16, 2014 | 2006 BMW X5 4.4i

1 Answer

P0430 ford f-250


P0430 - Catalyst System Efficiency Below Threshold Bank 2
Possible causes
- Three way catalyst converter Bank 2
- Exhaust tube
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module (ECM) Very rarely is this the problem.

Read more: http://engine-codes.com/p0430.html#ixzz2VZE6Plrz

Jun 07, 2013 | Cars & Trucks

1 Answer

Code p0420


Just did the P0430,so here's the P0420 trouble code.Trouble Code: P0420

Catalyst System Bank 1 Low Efficiency

Possible Causes:


Air leaks at the exhaust manifold or in the exhaust pipesBase engine problems (i.e., high engine oil or coolant usage).Catalytic converter is damaged, contaminated or has failed.Continuous engine misfire conditions, or weak or low coil output.Front HO2S or rear HO2S is contaminated with fuel or moisture.Rear HO2S is loose in the mounting hole (check it for a leak).Front HO2S older (aged) than the rear HO2S (HO2S-12 is lazy).Click here to see.

Jan 16, 2013 | 2005 Buick LeSabre

1 Answer

1996 taurus p420 code


The P0420 means Catalyst System Efficiency Below Threshold (Bank 1), and the P0430 means Catalyst System Efficiency Below Threshold (Bank 2).
__________________
ECU unlock immobilizer tool

Sep 17, 2012 | 1996 Ford Taurus

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

Light just came on when started vehicle. Another code followed P0430. Vehicle seems to run fine. thanks


P0430 - Catalyst System Efficiency Below Threshold Bank 2

The ECM or PCM monitors the switching frequency ratio of heated oxygen sensors 1 and 2.

A three way catalyst converter(Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.

When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst (Manifold) malfunction is diagnosed.

catalytic_converter.gif

Possible Causes:
- Three way catalyst converter Bank 2
- Exhaust tube
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module

Possible Solutions:
The most common cause it the three way catalyst converter Bank 1.

If the P0430 is combined with other DTC's try fixing those first and this code may clear.

Jan 30, 2011 | Nissan Armada Cars & Trucks

2 Answers

Hi on my nissan primera 2002 1.8 i have pluget in launch and the error is PO430 would you discribe what das it mean? Regards Adam


P0420 TW (Two-Way) Catalyst System, Bank 1
P0430 TW Catalyst System, Bank 2 .
most likely a new catalytic converter.

Thanks. keep updated for any more query.you can rate this solution and show your appreciation.

Sep 28, 2010 | Nissan Pulsar Cars & Trucks

1 Answer

Hard to start


P0430 Catalyst System Efficiency below Limit - Bank No 2" How would I fix that without taking it in? P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
you need a scan tool to monitor the upstream and downstream 02 sensors on bank 2 more than likely its the converter. also check for exhaust leaks before converter . Most times the problem is the Downstream O2 sensor2_bing.gif is defective.

Jun 02, 2010 | 1996 Ford Taurus

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