ford focus p0420 error code Pindall Arkansas

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ford focus p0420 error code Pindall, Arkansas

LinkBack Thread Tools Display Modes 08-04-2010, 12:02 PM #1 gaz1250 Focus Rookie Join Date: Feb 2008 Fan#: 53832 Location: Sheffield UK What I Drive: 2003 Zetec 1.6 Posts: 22 When this condition is present I look for any type of vacuum leak, intake leak or a dirty mass-air-flow (MAF) sensor that could be the cause of this problem. With no symptoms you could just leave it, but know that a bad cat will only get worse, and could clog. Appreciate ur efforts, Mina. #58 - Mina - 10/15/2010 - 23:25 I have a 2002 grand am V6 that has the P0420 code.

Looking at the fuel trim can tell you a lot without telling you too much. HELP!!! The rear o2 censor was replaced by infinity at 40,440 miles. Which Converters Are Legal to Use in New York?

Ken Schafer Jr. Be careful!! Just yesterday the check engine light popped up and i used the OBD code reader and it says p0420 . Visually inspect the exhaust system for leaks, check the catalytic converter for dents, holes, severe discoloration, and check for a rattle inside.

Your OBD-II Trouble Codes Repair Site Home Trouble Codes FAQs Forums Store Search Close P0420 OBD-II Trouble Code Technical Description Catalyst System Efficiency Below Threshold (Bank 1) What does that mean? The last thing I do, after replacing the converter with an approved quality aftermarket converter like those from Eastern Catalytic, is hook up my scan tool again and clear the codes, I have at least 5 cars a year either display 420 and sometimes 430(V6 or V8). So many people needing help and so few answering!

So try the tune up with the cat. Anmelden 170 Wird geladen... In other words a rich or lean fuel code. #73 - Alex - 12/02/2010 - 15:37 old shoe I will start off saying i own a 2001 firebird with 102,000 on it about a year ago i noticed a

Check Engine Light never came on any ideas tried to get service engine light to go out, no joy. A catalytic converter's job is to reduce emmissions from the exhaust. During this time, the switching activity of the upstream and downstream O2 sensors are essentially the same because nothing is happening inside the converter. The upstream O2 sensor in the exhaust manifold reacts to the exhaust gases as they exit the engine.

They replaced the converter and cleared the light and so far after more than a week and about 300 miles the light has not come back on again. just curious. #61 - Mike Jay - 10/20/2010 - 09:06 HArdRvkLllr p0420 Ok, long story short, I have an Audi a4 Quattro, and after the first time my ignition coil went Steps to install Installation Prerequisites FAQ 1 – Universal vs. It's worth checking into.

If so how much more MPG would u expect? What is the problem. #133 - Carol - 05/05/2011 - 11:09 can different grades of gas affect your cat i have a 2002 grand am gt 3.4 ram air v6 with As you can see a P0420 can be caused by many things, so if you have any doubts as to whether you can fix the problem yourself, please seek the advice what should i do next #3 - scott - 06/09/2009 - 12:27 i don't know what part is this this is for mitsubishi eclipse 1998 2.0 16 valves the code is

My problem was that I badly needed a tune up alone with the Cat. I took it back demanding an explination. To do that, you'll need access to a scan tool or oscilliscope. OK, so what does a P0420 code mean anyway?

You can change this preference below. The light came back on 3 days later. I did not in the first instance want to change the CAT as I have read in other forums of people replacing the CAT in response to a P0420 code only What would be the steps in finding what it is ?just turned 100,000 miles have a life time power train warranty just had the tranny replaced new plugs timing chain coolant

My question is do I replace every one of the O2 sensors bc I don't even know how many my car has?... It's an expensive fix so you want to make sure your vehicle really needs a new converter before you replace it. What could cause damage to a Cat.? On mine it has the same error code however I do not have any performance issues so it could be the cat for you.

Share Share this post on Digg Technorati Twitter 08-05-2010, 11:57 AM #9 gaz1250 Focus Rookie Join Date: Feb 2008 Fan#: 53832 Location: Sheffield UK What On thing that not a lot a people think of checking is the Ethanol rating in the gasoline they use!! I know lame excuse. check engine light came on & it was diagnosed with a PO420 problem.

The upstream O2 sensor will undergo a lot of switching activity because the engine computer is constantly adjusting the fuel mixture between rich (more fuel) and lean (less fuel). it's not efficient). Am I destroying another expensive Cat.? I'm not seeing anything online about this valve with the P0420 trouble code and would like to have this fixed myself ( a friend if possible anyway).