Catalyst Check Engine Error
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Catalyst System Efficiency Below Threshold Bank 2
the PO42O Code By Ken Schafer Jr. © Reproduced with permission from Undercar Digest. For subscription information call 800-274-7890 or visit www.mdpublications.com. Upon the arrival of the Onboard Diagnostics II (OBD-II) system, I remember thinking to myself that this new system was going to be the greatest thing to happen to vehicles since I had started working on them. Now all I needed to do was plug in a scan tool, since all p0420 toyota vehicles would have the same data-link connector (DLC) much to my delight again, and the car would tell me what was wrong with it. Sadly, it was only a few weeks later that I learned that this new system was still only a guideline and not a complete diagnosis. Throughout the years, after the start of OBD-II, it has become more and more accurate, but it still requires a bit of investigating after retrieval of the diagnostic trouble codes (DTCs). The P0420 code is no different. Here is a scenario: A customer pulls into the shop and says, “My check-engine light is on.” I tell them that I will scan the vehicle and find out what the problem is. Once I hook the scan tool up and navigate through the setup menus and click on display codes, I see P0420. Then I click the display code data and the scan tool says “Converter efficiency below threshold.” I crane my head out of the driver’s seat and yell to the manager that the vehicle needs a converter. This may not be true, as further diagnosis is necessary. From here on, I will try to explain some of the more-general steps I would take when diagnosing a converter with a scan tool. I will stay away from any finer po
that specific trouble code. If your car's check engine light is on, get that code read in case it's a P0420. A P0420 code is a trouble code on OBD-II equipped vehicles. All vehicles from 1996-newer sold in North America support this generic powertrain code. This code p0420 ford is a pretty common one and this site is here to help the average do-it-yourself (DIY) car
P0420 Honda
owner (like you) troubleshoot, diagnose, and fix their vehicle themselves when presented with a P0420 code, saving money. If your car has multiple trouble codes (DTC's),
P0420 Fix
it's always a good idea to fix them in the order they come up on the code reader. For example, if you have these codes - P0300, P0420, P0171, then you're going to want to tackle the P0300 Random Misfire code first http://www.easterncatalytic.com/education/tech-tips/the-misleading-nature-of-the-po42o-code/ (resolve it), and then tackle the P0420 code, etc. The reason for that is that the first code could be causing further DTCs to be set. If you've come to this site you most likely already know that you have a P0420 code. To start, we strongly recommend you seek the services of a professional mechanic/technician if you have any doubts as to whether you can perform the repair! Also, be sure to follow proper diagnostic procedures to determine whether a part has failed. If you http://www.p0420.com/ simply change parts hoping it will solve the problem, you're really just guessing and wasting money. This site is here for information purposes only and is meant to help you learn more about the dtc and decide if you can tackle the repair yourself. It is not intended as car repair advice. OK, so what does a P0420 code mean anyway? As mentioned above, the code's description is Catalyst System Efficiency Below Threshold (Bank 1). OK, now tell me that again in plain English please.... let's break it down: the catalyst system being referred to is your three-way catalytic converter; so the catalytic converter is not working properly (i.e. it's not efficient). Bank 1 refers to the side of the engine which contains cylinder #1. On inline engines such as 4 & 5 cylinder engines, there is only one bank. So, to really simply things let's just say that the efficiency of the catalytic converter and/or exhaust pipe and/or O2 sensor is not so great. There are no symptoms so why should I fix it? Great question! A P0420 code will cause no symptoms aside from the MIL (malfunction indicator light) will illuminate. The reality is there is still something wrong and your car needs attention in order to be in excellent running condition. A poorly maintained car will run less efficiently, burn more gas, and cost you more money in the long run. Plus, if your check engine light is on for a P0420 code and you decide not to fix it, another more ser
Google. Het beschrijft hoe wij gegevens gebruiken en welke opties je hebt. Je moet dit vandaag nog doen. Navigatie overslaan NLUploadenInloggenZoeken Laden... Kies je taal. Sluiten Meer informatie https://www.youtube.com/watch?v=FCTEmWo7FEE View this message in English Je gebruikt YouTube in het Nederlands. Je kunt deze voorkeur hieronder wijzigen. Learn more You're viewing YouTube in Dutch. You can change this preference below. Sluiten Ja, nieuwe versie behouden Ongedaan maken Sluiten Deze video is niet beschikbaar. WeergavewachtrijWachtrijWeergavewachtrijWachtrij Alles verwijderenOntkoppelen Laden... Weergavewachtrij Wachtrij __count__/__total__ Beating the P0420 Check Engine Code! jaykay18 AbonnerenGeabonneerdAfmelden4.0434K Laden... Laden... Bezig... Toevoegen aan Wil je check engine hier later nog een keer naar kijken? Log in om deze video toe te voegen aan een afspeellijst. Inloggen Delen Meer Rapporteren Wil je een melding indienen over de video? Log in om ongepaste content te melden. Inloggen Transcript Statistieken 210.255 weergaven 82 Vind je dit een leuke video? Log in om je mening te geven. Inloggen 83 166 Vind je dit geen leuke video? Log catalyst system efficiency in om je mening te geven. Inloggen 167 Laden... Laden... Transcript Het interactieve transcript kan niet worden geladen. Laden... Laden... Beoordelingen zijn beschikbaar wanneer de video is verhuurd. Deze functie is momenteel niet beschikbaar. Probeer het later opnieuw. Gepubliceerd op 16 nov. 2012Originally recorded October 26, 2012.Also seePart 2: http://www.youtube.com/watch?v=K40aLg...Part 3: http://www.youtube.com/watch?v=HL4K7C...It was time to get the car inspectorated. I've had a Check Engine Light on for quite some time now, P0420.You have a small window of opportunity to do this, and you will need an OBDII Scan Tool that will show you the readiness monitors and their status.If you have a P0420 code, this could be caused by a number of different things. Mainly it will indicate that the reading of the rear O2 sensor is very similar to the front O2 sensor. This could be due to a bad O2 sensor (front or rear), faulty wiring to those sensors, or worse, a bad catalytic converter or ECM.When you use a scan tool to reset the check engine light, it resets all the monitoring systems as well. As I had only one system monitor down (Catalyst Control) but the others running, my car