Some fail because they want to. HELP!!! If you changed your CAT but don't fix the other problem(s), you have just ruined another CAT. But sometimes a faulty O2 sensor is not bad enough to set an O2 sensor code but is off just enough to affect the accuracy of the catalyst monitor. http://jamisonsoftware.com/ford-focus/ford-focus-p0420-error-code.php
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 Then CLEANED the hell out of everything. 60k+ miles. 08-05-2010, 08:40 AM #8 LJGoose Focus Enthusiast Join Date: May 2010 Fan#: 75466 Location: Long Island, If they tell me that they have not, I inform them that additional diagnosis may be needed. As I had only one system monitor down (Catalyst Control) but the others running, my car had no code and was accepted as being ready to be inspected, which allowed me
Engine light just came on . In short: take the P0420 code seriously and give due dilligence to figuring why it has been logged. A dealer is supposed to sell you something that will pass inspection - they screwed me and gave me a guarantee that doesn't cover anything at all.
CEL came on today. Password: Confirm Password: Email Address Please enter a valid email address for yourself. The wiring harness on the new motor was short for reaching the 02 sensor in the rear of the cat. P0420 Ford Failed the emissions test of course so now I need to have it fixed.
I changed the pcv valve out and it fixed it. #42 - eric - 06/05/2010 - 15:06 po420 jetta 01 I replaced MAF sensor and pre o2,after 120 miles the code P0420 Toyota Corolla Loading... The converter I had on was only 2-3 years old. They said the converter I had was a cheap brand, I should have know, it only cost about $130.
it's not efficient). P0420 Nissan Advanced Search Register Help Remember Me? Good luck! Appreciate ur efforts, Mina. #58 - Mina - 10/15/2010 - 23:25 I have a 2002 grand am V6 that has the P0420 code.
Am I destroying another expensive Cat.? I bought this toyota corolla 2003 with 98000 millage today, as it is from dealer. P0420 Bank 1 Watch QueueQueueWatch QueueQueue Remove allDisconnect Loading... P0420 Fix not sure what else to try...i use a 10w30 in my engine should i try something like a synthetic blend or 5w30??? #38 - Luke - 05/11/2010 - 12:24 2005 dodge
Become a dealer of EUSPRO and waiting for you special price! http://jamisonsoftware.com/ford-focus/ford-focus-cd-error-11.php Basically, if there is a problem with one of the sensors in the engine or exhaust, it can cause either too much or too little fuel to enter the engine. They did not do anything further than read the code. Replaced #4 Piston, Rings, Rod+Bearings, AERA Re-Manufactured Cylinder Head and a light Hone. P0420 Honda Civic
Should I have it looked at further or just replace the cat. Even called Toyota and there was a vague TSB that mentioned the 2003-2004 Corolla with 'Reflash ECM and replace converter'..Hmmmm The manufacturer is aware of a problem and keeps it under 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? Check This Out They replaced the sensor B2S1 Recheck System.
converter and the shop i took it 2 cost me 54 bucks just for the guy 2 cut off the braket and weld a peice of pipe 2 it. P0420 Ford Focus RockysRoadshow 514,701 views 10:38 Check Engine Light & the Catalytic Converter - Duration: 3:38. Can you splice wires leading to the 02 sensor?
Catalyst Monitor Efficiency Self-Test The OBD II catalyst monitor runs a self test when certain driving conditions have been met. This feature is not available right now. heard my exhaust leak clear as day then. (tip from a muffler shop) Do not cover you cel or mil light with tape. P0430 Ford You have what we call a BITCH CODE.
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 what can it be? #24 - Albert - 01/19/2010 - 19:39 2002 Buick Rendezvous PO420 Bank1 keeps repeating after code has been cleared. First, the excess fuel entering the exhaust can coat the catalyst, cooling it as well as protecting the precious metals (which cause the catalytic reaction). this contact form Ie: bad injector, bad spark plug, bad wires or coil pac, etc.
of Hg. I did run a tank full of BP Ultimate fuel through, and at almost 1/2 tank used, the code went away. Engine seams to chug when driving-maybe a speed sensor? If they are present, again further engine repairs may be needed before replacement of the converter.
Share Share this post on Digg Del.icio.us Technorati Twitter Bookmarks & Social Networks Twitter Facebook Myspace Digg del.icio.us StumbleUpon Google reddit vBulletin Message Cancel Changes Quick Reply Will a high flow cat make this light come on? jaykay18 55,239 views 7:59 $3 O2 simulator fix for P0420 Check Engine Light - Duration: 7:35. converter? #2 - Tessa - 05/21/2009 - 11:07 2002 saturn p0420 code changed o2 sensor ,cool temp sensor,engine light is still on.
I had changed all 16 spark plugs, 8 wires, 8 coils and even the EGR valve... I have just recently chaged my o2 sensor and my check engine light just came on and I checked it with a scanner and the po420 code came up. Does anybody have any other ideas about what else I should check first before replacing the other sensor? We cleaned the injectors, new filter, cleaned the MAP sensor and intake system... "NO HELP". "FINALLY" I went to another exhaust expert expecting to replace the CAT one more time, and
They informed me that they had crossed the coil wires and fixed it.