Question about 2004 Chevrolet Malibu

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What does p0430 code mean in a chevy malibu?

Check engine light is on. code p0430 is coming up. i don't know which sensor that is or if i need a new catalytic converter

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  • Chevrolet Master
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It is the o2 sensor next to the catalytic converter which is the bank 2 sensor

Posted on Oct 31, 2012

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Posted on Jan 02, 2017

awcforever
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SOURCE: I have a 2005 Chevy Malibu. The check engine

"This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine."
Hope that helps..

Posted on Mar 25, 2009

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SOURCE: chevy malibu check engine light on code P1665 what

P1665 Evap vent solenoid control circuit

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SOURCE: 2001 chevy cavalier check engine light came on.

first i would have autozone give you a print out of the codes that were stored in the computer of your cars ecm.then check the trouble tree for diagnosing those codes.autozone sells a book on trouble codes.do you have over 100,000 miles on the car? the converter is covered upto 10 years or 100,000 miles.next, yes you can remove and replace the 02 sensor,with a 7/8 wrench and or buy a 02 socket.on a 4 cyl. engine there is 2 one before and one after the converter which is located in the exhaust close to the engine.hope this helps.

Posted on Dec 06, 2009

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SOURCE: 2.2 ecotec engine. Code says random misfire. What

did you fix it? if you did what did you do? i have the same prblm thanks!

Posted on Jan 17, 2010

emissionwiz
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SOURCE: Chevy aveo error codes. I have a check engine light on.code p2135

P2135 Throttle Position Sensor (TPS) Property Malfunction, remember this is not a car that is built by GM it is a Korean import.

Posted on Jun 07, 2010

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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

Code p0430 on a 99 Silverado 5.3L 4WD


That is a Bank 2 Catalyst inefficiency code. Typically it is the catalytic converter that has failed. Bank 1 would be the same side of the engine as the number 1 cylinder, Bank 2 is the opposite side of the engine.

Typically a scan tool is used to monitor the downstream (after the catalytic converter) O2 sensors as well as other data like fuel trims. Compare both downstream O2 sensors to see if the are reacting the same. Typically they will hold steady at idle. If bank 2 is switching from high to low voltage (similar to the upstream O2 sensors) than the catalytic converter is usually the culprit.

If you can post the year, make, model, and engine size I may be able to help you further.

Nov 07, 2015 | 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

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

3 Answers

Code P1155 shows on OBDII scaner for rav4 2001 2W dr..


The codes indicate problems with the air/fuel ratio sensor and the catalytic converter.

Mar 26, 2014 | 2001 Toyota RAV4

2 Answers

What can i do to fix p0420 & p0430 code.. 2005 ford expedition 5.4 ,,,, can you please tell me where is located p0010 code, A camshaft position actuator circuit/open bank 1... Same truck .. Thank you


p0420 and p0430 both indicate a clogged catalytic converter. 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. The p0010 indicates camshaft sensor. The camshaft sensor may be the main problem, as it will affect your timing and fuel/air ratio, which in turn can effect what your Oxygen sensors detect, throwing the p0420 and p0430.

Make sure your car is timed correctly by the timing chain/belt, reset light, then if it dont' solve the problem, change oxygen sensors, if those don't help, catalytic converter is clogged.

Dec 10, 2013 | Cars & Trucks

1 Answer

Trouble code P0430 2006 Chrysler Sebring


Hi,


code: Catalyst System Efficiency Below Threshold (Bank 2)
Causes

A code P0430 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 Solutions

First, inspect for exhaust leaks.

Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen O2 sensoricon1.png while you're at it.

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileageicon1.png warranty on these items. It's worth checking into.


Td

Nov 06, 2012 | 2006 Chrysler Sebring

1 Answer

My Ford Taurus Failed the inspection, we have replaced 1 oxygen sensor, but the reading still failed. Went to the Autozone & & did a reading came up with two codes P0430 & P0125, is this to...


PO125 means the ECM sees the engine is too cold to go into closed loop and runs rich for too long.
PO430 means the ECM doesn't like what it sees coming out the exhaust.
I would check the thermostat and make sure the engine is getting up to 195-200 degrees after 5 or 10 min of drive time, and if it is then check the temp sensor for the ECM to make sure it is reading the engine temp correctly.
Fixing the code 125 should take care of the code 430.

Jun 24, 2012 | 2001 Ford Taurus

1 Answer

I have 2008 Malibu 4 cylinder and my engine light comes on, my temperature gage at times doesn't work and when it isn't working the fan keeps running and the engine light goes off at times, th


You need to find out the fault code that is stored that is causing the check engine light, the whole thing may be related to one failed part like the temperature sensor or the wiring to it.

May 17, 2012 | 2008 Chevrolet Malibu

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