Question about Toyota Cars & Trucks
Most of the time the catalytic converter is bad an needs to be replaced . Have you had any misfire's ?
Posted on Apr 20, 2017
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Toyota Camry 2004 P0420
well that's if I'm not mistaken, catalyst system efficiency THRESHOLD!!! it is "bank" when your description code explanes bank 1 that is a O 2 sensor anything says BANK is a Oxygen sensor = O 2 sensor.what is it doing shutting off when eng warms up or sputtering or nothing really out of normal behavior? these switches will loose all communication with computer or get stuck in 1 of three ranges each range behave differently! in each range the deal with these are these switches are a part of maintenance usa @ hundred thousand km they should be change for emission efficiency and fuel consumption and vehicle performance usually after 1 is changed 9 times out of 10 shortly after the next bank will produce eng light and so on!! I usually change both while I'm at it you know pay me now or pay me again later but twice as much! well hope this helps you out good luck cheers happy new year.John, Toronto,Ontario
Posted on Jan 03, 2009
That's a pretty RELIABLE code!... You have a bad CAT (Catalytic Converter). Trust it to be accurate. The conditions which set this code is when the Upstream O2 sensor's data/signal is compared to the Downstream sensor's data/signal... when they are nearly identical, that's when this code is set (unless you have an exhaust leak).. If there is an exhaust leak.. repair it, then retest/recheck.
Posted on May 31, 2009
have you tried to replace the 02 sensors, make sure to use penetrating lubricant when removing them, you may need to apply heat as well to get them to come out without stripping out.
Posted on Jul 13, 2009
Tips for a great answer:
Jan 26, 2016 | Cars & Trucks
May 22, 2015 | 2006 Toyota Tacoma
Mar 09, 2013 | Cars & Trucks
Dec 13, 2011 | 1999 Mercury Cougar
Feb 18, 2010 | 2000 Toyota Celica
Nov 13, 2009 | 2000 Subaru Outback
Mar 29, 2009 | 1997 Toyota Camry
Jan 03, 2009 | 2003 Toyota Corolla
23 people viewed this question
Usually answered in minutes!