MIL Comes On with DTC P0420-Catalytic Converter Bad?
04-20-2019, 04:59 PM
#1
MIL Comes On with DTC P0420-Catalytic Converter Bad?
On Thursday evening the dash lit up like a Christmas tree again, I was like, what is it THIS time lol, dropped it off last night, just got the call, cat converter is bad (no doubt helped by the fuel mixture issue the SW update in the recent recall is intended to fix). And of course, since I have 80K miles on the car now, the factory warranty has expired. BUT WAIT, HA HA HA, I have a Platinum extended warranty! So it will be fixed with no expense to me. But this is the first time I have had a cat converter go bad in any vehicle, some of which I have had for over 10 years. Not pleased....
04-22-2019, 10:07 AM
#2
FUCK. Not covered by warranty, considered a "normal wear and tear" part. $1400 total.
04-22-2019, 11:20 AM
#4
Three Wheelin'
Not covered under warranty then I'd take it to an independent mechanic
04-22-2019, 12:40 PM
#5
Forum Contributor
Join Date: Sep 2013
Location: Chicago NW Burbs
Age: 47
Posts: 1,607
Likes: 0
Received 1,391 Likes
on
643 Posts
Catalytic converters are covered for 8 years or 80,000 miles, whichever comes first, per the Federal and California Emissions Extended Warranties Parts List in your warranty booklet.
If you haven't done so already, I would have your dealer look at TSB 17-034 - MIL Comes On with DTC P0430 (Front Bank Catalyst System Efficiency Below Threshold [Bank 2]). It may not be a bad catalytic converter and your 2015 TLX may just need the software update.
If you haven't done so already, I would have your dealer look at TSB 17-034 - MIL Comes On with DTC P0430 (Front Bank Catalyst System Efficiency Below Threshold [Bank 2]). It may not be a bad catalytic converter and your 2015 TLX may just need the software update.
04-22-2019, 12:49 PM
#6
Catalytic converters are covered for 8 years or 80,000 miles, whichever comes first, per the Federal and California Emissions Extended Warranties Parts List in your warranty booklet.
If you haven't done so already, I would have your dealer look at TSB 17-034 - MIL Comes On with DTC P0430 (Front Bank Catalyst System Efficiency Below Threshold [Bank 2]). It may not be a bad catalytic converter and your 2015 TLX may just need the software update.
If you haven't done so already, I would have your dealer look at TSB 17-034 - MIL Comes On with DTC P0430 (Front Bank Catalyst System Efficiency Below Threshold [Bank 2]). It may not be a bad catalytic converter and your 2015 TLX may just need the software update.
04-22-2019, 12:53 PM
#7
I've been working with this dealership for 11 years, they know me and I trust them (mostly lol). Whereas I do not have an independent mechanic I trust, and given how I price my time, I would burn the cost delta trying to find one I could trust. But thanks.
Trending Topics
04-22-2019, 12:54 PM
#8
Catalytic converters are covered for 8 years or 80,000 miles, whichever comes first, per the Federal and California Emissions Extended Warranties Parts List in your warranty booklet.
If you haven't done so already, I would have your dealer look at TSB 17-034 - MIL Comes On with DTC P0430 (Front Bank Catalyst System Efficiency Below Threshold [Bank 2]). It may not be a bad catalytic converter and your 2015 TLX may just need the software update.
If you haven't done so already, I would have your dealer look at TSB 17-034 - MIL Comes On with DTC P0430 (Front Bank Catalyst System Efficiency Below Threshold [Bank 2]). It may not be a bad catalytic converter and your 2015 TLX may just need the software update.
04-22-2019, 04:18 PM
#9
expound on the fuel issue..
AS that's what CAUSED the cat to go bad, prematurely.. .
i'm not understanding what you put in parenthesis in the original post.
Bad fuel WILL prematurely damage the cat.
AS that's what CAUSED the cat to go bad, prematurely.. .
i'm not understanding what you put in parenthesis in the original post.
(no doubt helped by the fuel mixture issue the SW update in the recent recall is intended to fix)
Bad fuel WILL prematurely damage the cat.
04-22-2019, 06:01 PM
#10
My catalytic converter in my '04 TL went out after 11 years and about 246k. lol. It's what finally made me sell the car after a few other somewhat-expensive repairs a couple of thousand miles before that. I've got around 97k on my TLX. Not going to be happy if this thing goes out around now -- especially with a timing belt change coming not too long from now, too.
Last edited by Rocketsfan; 04-22-2019 at 06:03 PM.
04-23-2019, 03:50 PM
#11
A guy I worked with said it might be the rear oxygen sensor, that triggers the same code (p0420). Our regular Acura mechanic said he would investigate, and that they had been having a number of issues with twitchiness in this area.
The following users liked this post:
justnspace (04-23-2019)
06-02-2019, 03:43 PM
#14
Not necessarily bad gas. I had the same issue. Blocked/overheating cats replaced by Acura with less than 5K miles...problem first ocurred at 400 miles . Other than factory gas, it never had any gas other than Shell Nitro pumped into it. Problem not indicated by codes. 6 trips to dealer for recurring dash light up, resets, reloads yada yada yade...15 days in shop before Acura isolated overheating exhaust/cat failure. That's a parts supplier/Acura quality/compliance issue, not a gas issue.
Last edited by JonfromCB; 06-02-2019 at 03:51 PM.
08-14-2019, 08:38 PM
#15
I thought about this thread when I saw EE4Life post this TSB in the various TLX TSB threads he maintains :
http://www.urvi.net/forumfiles/SB/B19-049.PDF
http://www.urvi.net/forumfiles/SB/B19-049.PDF
Thread
Thread Starter
Forum
Replies
Last Post