For Shop Owners

P0430 CHEVROLET - Catalyst System Low Efficiency Bank 2

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3 What does this mean?
Comments | Add Comment

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
  • Powertrain Control Module (PCM)
What does this mean?

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.
What does this mean?

When is the code detected?

If a condition exists which causes the Powertrain Control Module (PCM) to detect excessive Bank 2 HO2S #2 activity outside of an acceptable range for an extended period of time, the PCM will set the P0420 code. This indicates that the three-way catalytic converters oxygen storage capacity is below a threshold considered acceptable.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0430 CHEVROLET Description

In order to maintain a reasonably low emissions of Hydrocarbons (HC), Carbon Monoxide (CO), and Oxides of Nitrogen (NOx), the engine controls system uses a three-way catalytic converter. The catalyst within the converter promotes a chemical reaction which oxidizes the HC and CO present in the exhaust gas. This reaction converts them into harmless water vapor and Carbon Dioxide. The catalyst also reduces NOx, converting it to Nitrogen. The Powertrain Control Module (PCM) monitors this process using Bank 2 HO2S #2. Bank 2 HO2S #2, located in the exhaust stream past the three-way catalytic converter, produces an output signal which indicates the oxygen storage capacity of the catalyst. This determines the catalysts ability to convert exhaust emissions effectively. If the catalyst is functioning correctly, the Bank 2 HO2S #2 signal will be far less active than that produced by Bank 2 HO2S #1.
OBDII Code P0430 Chevrolet - Catalyst System Low Efficiency Bank 2 -

Need more help?

Do you need more help with the P0430 Chevrolet code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code

P0430 CHEVROLET Comments

Help us improve Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0430 Chevrolet code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 2
1=Low 2=Medium 3=High
Repair Difficulty Level: 2
1=Easy 2=Moderate 3=Hard

Browse All Codes For Specific Model YearBeta
Ford F150 1998 Ford F150
1999 Ford F150
2000 Ford F150
2001 Ford F150
2002 Ford F150
2003 Ford F150
Ford Fusion 2006 Ford Fusion
2007 Ford Fusion
2008 Ford Fusion
2009 Ford Fusion
2010 Ford Fusion
2011 Ford Fusion
2012 Ford Fusion
Honda Accord 2008 Honda Accord
2009 Honda Accord
2010 Honda Accord
Honda Civic 1996 Honda Civic
1997 Honda Civic
1998 Honda Civic
1999 Honda Civic
2000 Honda Civic
Infiniti G35 2003 Infiniti G35
2004 Infiniti G35
2005 Infiniti G35
2006 Infiniti G35
Nissan Altima 2002 Nissan Altima
2003 Nissan Altima
2004 Nissan Altima
2005 Nissan Altima
2006 Nissan Altima
2008 Nissan Altima
2009 Nissan Altima
2010 Nissan Altima
2011 Nissan Altima
2012 Nissan Altima
Nissan Maxima 2005 Nissan Maxima
2006 Nissan Maxima
2007 Nissan Maxima
2008 Nissan Maxima
Nissan Pathfinder 2005 Nissan Pathfinder
2006 Nissan Pathfinder
2007 Nissan Pathfinder
2008 Nissan Pathfinder
2009 Nissan Pathfinder
2010 Nissan Pathfinder
2011 Nissan Pathfinder
2012 Nissan Pathfinder
Nissan Rogue 2008 Nissan Rogue
2009 Nissan Rogue
2010 Nissan Rogue
2011 Nissan Rogue
2012 Nissan Rogue
2013 Nissan Rogue
Nissan Sentra 2002 Nissan Sentra
2003 Nissan Sentra
2004 Nissan Sentra
2005 Nissan Sentra
2006 Nissan Sentra
2007 Nissan Sentra
2008 Nissan Sentra
2009 Nissan Sentra
2010 Nissan Sentra
2011 Nissan Sentra
2012 Nissan Sentra
Toyota Camry 1997 Toyota Camry
1998 Toyota Camry
1999 Toyota Camry
2000 Toyota Camry
2001 Toyota Camry
2006 Toyota Camry
2007 Toyota Camry
2008 Toyota Camry
2009 Toyota Camry
2010 Toyota Camry
2011 Toyota Camry
Toyota Corolla 2005 Toyota Corolla
Toyota Echo 2000 Toyota Echo
2001 Toyota Echo
2002 Toyota Echo
Toyota Highlander 2001 Toyota Highlander
2002 Toyota Highlander
2003 Toyota Highlander
2004 Toyota Highlander
2005 Toyota Highlander
2006 Toyota Highlander
2007 Toyota Highlander
Toyota Prius 2004 Toyota Prius
2005 Toyota Prius
2006 Toyota Prius
2007 Toyota Prius
2008 Toyota Prius
2009 Toyota Prius
Scion xB 2005 Scion xB
2006 Scion xB
2007 Scion xB
Home - For Shop Owners - About - Privacy Policy - Terms and Conditions - - Copyright 2010-2018 - - - -
Posted and Edit by 06-14-2015

Related pages

fault code p04012001 chevy tahoe gas mileage2004 suzuki forenza catalytic converterdodge ram governor pressure sensornissan almera not startingservice engine soon nissan xterrap0010 codearea code 00812006 c280 4matictoyota rav4 2002 enginenissan sentra ecmhonda civic knock sensor location2003 nissan altima 2.5 s engine2005 exterragmc envoy 2005 problems2001 honda civic oil panvtec oil leakp0171 honda accord 1998fuel pump ford taurus 200098 maxima glep2431p0401 isuzu troopersaturn vue transmission problemso2 sensor voltage rangekia sorento 2007 diesel problemsacura 3.2 vtec engine03 oldsmobile silhouettep27162003 pt cruiser transmission problemsobd bulb checkwhat does code p0174 meanmazda tribute misfirep0420 toyota corolla 2001vetec valves2006 nissan titan catalytic converter replacement02 sensor bank 1 sensor 2nissan sentra gxe 20002006 ford expedition spark plugsford abs codesp1670 code ford powerstrokeford mondeo thermostatobd2 p0455gm chassis codes2002 hyundai accent batterycauses for misfireoxygen sensor toyota corolla2003 nissan altima aftermarket parts2002 nissan altima exhaust system diagramp105bbmw fuel pump relayp0171 honda accord2006 toyota rav4 transmission fluidp0102 ford explorer2001 nissan maxima ecmcost to replace catalytic converter nissan altima2005 ford taurus starting problems4g63 fuel consumptionp1288 ford f1502001 chevy silverado electronic brake control module2006 chevy impala overheatingfuel pump 2005 chevy malibudtc p04522004 hyundai sonata timing belt replacement2003 honda accord tune upintegra oxygen sensor2001 ford explorer exhaustegr valve honda accord 2001nissan titan fuel pump problems2007 ford expedition transmission fluidp 0301