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Hummer h2 2006 fix for check engine code p0430

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SOURCE: engine code evap leak on my 2007 h3 hummer

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CODE P0430 GMC


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 06, 2016 | GMC Cars & Trucks

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Check engine light on engine miss replaced o2 sensors code 430 no exaust leaks flashed the system still missing wrench says maybe EGR valve at a cost of 400. installed but may not work ?????


You say you have a P0430 code ?
P0430 - Catalyst System Efficiency Below Threshold Bank 2

Read more: http://www.autocodes.com/p0430.html#ixzz45zcgchOf
You need a catalytic converter ,no EGR problem . Suggest you take your vehicle to a ASE certified repair shop . You had or have a misfire , this wrecked you catalytic converter !

Apr 15, 2016 | Cars & Trucks

1 Answer

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

Engine Code PO430


P0430 Ford - 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) Tech notes 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.

Mar 14, 2015 | 2010 Ford F-150

2 Answers

2005 Hyundai Tucson 2.7L 2WD


P0430 is a catalyst efficiency code. If there are no leaks in the exhaust or any vacuum leaks that could affect O2 sensor operation and the O2 sensors are working properly then it's possible that you need a catalytic converter. If you have access to a scanner capable of reading live data plug it in and take the vehicle on the high way at a steady 55-60 mph. The O2 sensor should read somewhere around 700 mv give or take but should not fluctuate to much. If it does you need a catalyst bank #2. Good luck!

Apr 10, 2014 | Cars & Trucks

1 Answer

P0430 code on bank 2 04 BMW 745li


It goes by the firing order of the engine .. Find which piston fires 2nd and that side of the engine is bank 2.

Feb 04, 2012 | BMW Cars & Trucks

1 Answer

P0430


P0430 Catalyst System Efficiency Below Threshold (Bank 2)

P0441 Evaporative Emission Control System Incorrect Purge Flow
with p0441 did you replace the gas cap on all the way? that will cause this code every time. and or have you ever replaced the gas cap?

Apr 15, 2010 | 2006 GMC Sierra

1 Answer

Ck. Engine P0420 & P0430


engine code p0430 for 2005 toyota sienna

Nov 25, 2009 | Toyota RAV4 Cars & Trucks

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