Question about Toyota Tacoma
Well, the P0420 means "Catalyst System Efficiency Below Threshold (Bank 1)" - that both oxygen sensors (the one before the converter and the one after the converter) are reading about the same, meaning the converter is not working within the set efficiency envelope.
the "Bank 1" is just a way to differentiate between right and left for dual exhaust and dual catalytic converters - Bank 1 or Bank 2
Then they have (Bank 1 Sensor 1) (Bank 1 Sensor 2) (Bank 2 Sensor 1) (Bank 2 Sensor 2)
In any event, it sounds like Toyota was correct, but, WOW , A few hundred? Considering the Oxygen Sensors cost between $124 and $194 (front or rear) - you can safely say the part will cost $200 - even at the local parts house. Then the shop labor - which will NOT take more than 20 mins to replace since they nailed which one needs replacing. Unless its a ****** doing it. They have shop minimums though I'm sure.
Good Luck and Take Care
Posted on Oct 08, 2010
a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 26, 2017 | 2008 Toyota Highlander
Feb 27, 2012 | 1993 Ford Taurus
Dec 23, 2011 | 2003 Pontiac Grand Am
Sep 13, 2011 | 2001 Toyota Camry
Apr 03, 2010 | 2003 Toyota Tacoma
Nov 22, 2009 | 2003 Nissan Murano
Jun 22, 2009 | 1995 Toyota Tacoma
Feb 02, 2009 | 2005 Toyota Corolla
Aug 30, 2008 | 2003 Toyota Camry
625 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: