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Possible causes - Three way catalyst converter Bank 1- Exhaust tube- Intake air leaks- Fuel injectors may be faulty- Fuel injector leaks- Spark plugs may

P0420 Honda Accord

be faulty- Improper ignition timing- Engine Control Module (ECM) What does this p0420 honda civic mean? Tech notes As the code description implies the P0420 code means that the vehicle's control module has detected that p0420 honda ridgeline 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

P0420 Honda Odyssey

convert needs to be replaced to fix the problem. If the P0420 code is combined with other codes, try fixing the other codes first. What does this mean? When is the code detected?- Three way catalytic converter Bank 1 does not operate properly.- Three way catalyst converter Bank 1 does not have enough oxygen storage capacity. Possible symptoms- Engine Light ON (or Service Engine Soon Warning

P0420 Honda Accord 1998

Light) P0420 Honda Description The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed. P0420 Honda Information for specific Honda models P0420 1996 HONDA CIVIC P0420 1997 HONDA CIVIC P0420 1998 HONDA CIVIC P0420 1999 HONDA CIVIC P0420 2000 HONDA CIVIC Related Information Repair Importance Level: 2 1=Low 2=Medium 3=High Repair Difficulty Level: 2 1=Easy 2=Moderate 3=Hard AutoCodes.com FREE Android App Search Codes By Make Acura Audi BMW Buick Cadillac Chevrolet Chrysler Dodge Eagle Ford GEO GMC Honda Hummer Hyundai Infiniti Isuzu Jaguar Jeep KIA Land Rover Lexus Lincoln Mazda Mercedes-Benz Mercury MINI Mitsubishi Nissan Oldsmobile Pontiac Saab Saturn Scion Subaru Suzuki Toyota Volkswagen Volvo Browse All Codes For Specific Model YearBeta Ford F150 1998 Ford

Repair Difficulty Level:2/3 | Add Comment http://www.autocodes.com/p0420_honda.html Forum Code Possible causes - Three way catalyst converter Bank 1- Exhaust tube- Intake air leaks- Fuel injectors may be faulty- p0420 honda civic 2001 Fuel injector leaks- Spark plugs may be faulty- Improper ignition timing- Engine Control Module (ECM)

P0420 Honda Civic 1999

What does this mean? Tech notes As the code description implies the P0420 code means that the vehicle's control module has p0420 honda civic 2002 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 http://www.engine-codes.com/p0420_honda.html to be replaced to fix the problem. If the P0420 code is combined with other codes, try fixing the other codes first. What does this mean? When is the code detected?- Three way catalytic converter Bank 1 does not operate properly.- Three way catalyst converter Bank 1 does not have enough oxygen storage capacity. Possible symptoms- Engine Light ON (or Service Engine Soon Warning Light) P0420 Honda Description The Engine Control Module (ECM) http://www.autocodes.com/p0420_honda.html monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed. P0420 Honda Information for specific Honda models P0420 1996 HONDA CIVIC P0420 1997 HONDA CIVIC P0420 1998 HONDA CIVIC P0420 1999 HONDA CIVIC P0420 2000 HONDA CIVIC Need more help? Do you need more help with the P0420 Honda code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code Ask a Question Find a Shop Related Information Help AutoCodes.com Help us improve AutoCodes.com. 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 P0420 Honda code? Have you replaced any parts? Any information is appreciated. Thanks Please enable JavaScript to view the AutoCodes.com Powered by Disqus. AutoCodes.com Comments Powered by Disqus Repair Importance Level: 2 1=Low 2=Medium 3=High Repair Difficult

Du siehst YouTube auf Deutsch. Du kannst diese Einstellung unten ändern. Learn more You're viewing YouTube in German. You can change this preference below. Schließen Ja, ich möchte sie behalten Rückgängig machen Schließen Dieses Video ist https://www.youtube.com/watch?v=-c8090n1Ihs nicht verfügbar. WiedergabelisteWarteschlangeWiedergabelisteWarteschlange Alle entfernenBeenden Wird geladen... Wiedergabeliste Warteschlange __count__/__total__ P0420 Code http://honda-tech.com/forums/honda-accord-1990-2002-2/p0420-catalyst-system-efficiency-below-threshold-bank1-o2-cat-1154743/ Fix How Its Done Catalyst Efficiency Below Threshold ACE AUTOS UK AbonnierenAbonniertAbo beenden217217 Wird geladen... Wird geladen... Wird verarbeitet... Hinzufügen Möchtest du dieses Video später noch einmal ansehen? Wenn du bei YouTube angemeldet bist, kannst du dieses Video zu einer Playlist hinzufügen. Anmelden Teilen Mehr Melden Möchtest du dieses p0420 honda Video melden? Melde dich an, um unangemessene Inhalte zu melden. Anmelden Transkript Statistik 218.043 Aufrufe 150 Dieses Video gefällt dir? Melde dich bei YouTube an, damit dein Feedback gezählt wird. Anmelden 151 181 Dieses Video gefällt dir nicht? Melde dich bei YouTube an, damit dein Feedback gezählt wird. Anmelden 182 Wird geladen... Wird geladen... Transkript Das interaktive Transkript konnte nicht geladen werden. p0420 honda civic Wird geladen... Wird geladen... Die Bewertungsfunktion ist nach Ausleihen des Videos verfügbar. Diese Funktion ist zurzeit nicht verfügbar. Bitte versuche es später erneut. Veröffentlicht am 20.06.2014Here is a tutorial on P0420 code fix catalyst efficiency below threshold How To Diagnose a p0420 code. p0420 Code Fix how to diagnose and fix a Catalytic Converter and what to look out for http://youtu.be/-c8090n1Ihsfirst make sure no other DCT codes are present once all the other DTCs are fixed, clear the codes and start the engine up. Warm the engine up until the engine fan kicks in. Then, increase engine speed for about five minutes, usually between 2,500 rpm; this will help the catalytic converter light off heat up. After this look at the wave forms between the catalytic converter front upstream oxygen sensor and catalytic converter downstream rear O2 sensors. If the front catalytic converter upstream oxygen sensor wave form is switching from high to low (rich to lean) and the rear catalytic converter downstream oxygen sensor is close to a straight line, the original converter should be good. If the rear catalytic converte

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