P0420 Code - Replacing Catalyst Converter
Thread Starter
Driver School Candidate
Joined: Aug 2018
Posts: 1
Likes: 0
From: RI
P0420 Code - Replacing Catalyst Converter
Hi guys,
I got a 2008 IS350 and i have my check engine light on with the code P0420. I have taken the car to various reputable places (including my lexus dealer) and every single one has told me i need to replace my front right converter. The dealership quoted the part for $1,300+ (w/o labor) but i have been looking online to see other options.
This is the one i been thinking about buying: https://www.carid.com/2008-lexus-is-...389125789.html
I read how some converters might trigger the code even though the converter might be working fine. I would hate to buy this converter and still have the code since i need to pass emission test to inspect my car. What do you guys know about magna flow converters? Any other brand/converter suggestions? Other places i could get a good converter that won't trigger the code?
I got a 2008 IS350 and i have my check engine light on with the code P0420. I have taken the car to various reputable places (including my lexus dealer) and every single one has told me i need to replace my front right converter. The dealership quoted the part for $1,300+ (w/o labor) but i have been looking online to see other options.
This is the one i been thinking about buying: https://www.carid.com/2008-lexus-is-...389125789.html
I read how some converters might trigger the code even though the converter might be working fine. I would hate to buy this converter and still have the code since i need to pass emission test to inspect my car. What do you guys know about magna flow converters? Any other brand/converter suggestions? Other places i could get a good converter that won't trigger the code?
CL Community Team
Joined: Dec 2005
Posts: 5,697
Likes: 337
From: NJ
Check carefully to make sure that you don't have an exhaust leak, which is the most common reason for the P0420 code on this car. Usually it leaks at the Y-pipe, under the heat shield - which muffles the sound a bit. If so, this is something that an exhaust shop can fix reasonably inexpensively.
Former Sponsor
Joined: Jul 2017
Posts: 117
Likes: 14
From: California
Hi guys,
I got a 2008 IS350 and i have my check engine light on with the code P0420. I have taken the car to various reputable places (including my lexus dealer) and every single one has told me i need to replace my front right converter. The dealership quoted the part for $1,300+ (w/o labor) but i have been looking online to see other options.
This is the one i been thinking about buying: https://www.carid.com/2008-lexus-is-...389125789.html
I read how some converters might trigger the code even though the converter might be working fine. I would hate to buy this converter and still have the code since i need to pass emission test to inspect my car. What do you guys know about magna flow converters? Any other brand/converter suggestions? Other places i could get a good converter that won't trigger the code?
I got a 2008 IS350 and i have my check engine light on with the code P0420. I have taken the car to various reputable places (including my lexus dealer) and every single one has told me i need to replace my front right converter. The dealership quoted the part for $1,300+ (w/o labor) but i have been looking online to see other options.
This is the one i been thinking about buying: https://www.carid.com/2008-lexus-is-...389125789.html
I read how some converters might trigger the code even though the converter might be working fine. I would hate to buy this converter and still have the code since i need to pass emission test to inspect my car. What do you guys know about magna flow converters? Any other brand/converter suggestions? Other places i could get a good converter that won't trigger the code?
https://www.magnaflow.com/products?partNumber=49285
If you have any other questions about it, or would like some assistance locating an authorized Magnaflow dealer, please do not hesitate to contact us by PM or phone at 1-800-990-0905!
Check carefully to make sure that you don't have an exhaust leak, which is the most common reason for the P0420 code on this car. Usually it leaks at the Y-pipe, under the heat shield - which muffles the sound a bit. If so, this is something that an exhaust shop can fix reasonably inexpensively.
Trending Topics
There is puddy-like exhaust patching stuff at many auto part stores that is supposed to take the extreme temps. Like WB Weld, but for higher temp jobs.
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation
Joe Kucinski
Lexus LC500 Convertible Auction: A Preview of Rising Values?
Brett Foote
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler
Michael S. Palmer
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)
Joe Kucinski
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!
Brett Foote
Pit Crew
Joined: Mar 2007
Posts: 125
Likes: 12
From: DC
Check carefully to make sure that you don't have an exhaust leak, which is the most common reason for the P0420 code on this car. Usually it leaks at the Y-pipe, under the heat shield - which muffles the sound a bit. If so, this is something that an exhaust shop can fix reasonably inexpensively.
Thread
Thread Starter
Forum
Replies
Last Post
UNOHOO
RX - 1st Gen (1999-2003)
4
Jul 6, 2009 09:52 AM