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Cat Converter Bad

 
Old 04-20-2019, 04:59 PM
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Cat 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....
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Old 04-22-2019, 10:07 AM
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FUCK. Not covered by warranty, considered a "normal wear and tear" part. $1400 total.
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Old 04-22-2019, 10:44 AM
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Id be pissed.
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Old 04-22-2019, 11:20 AM
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Not covered under warranty then I'd take it to an independent mechanic
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Old 04-22-2019, 12:40 PM
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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.
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Old 04-22-2019, 12:49 PM
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Originally Posted by EE4Life View Post
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.
I'm over 80K miles. :-( But I did leave a message with my service rep about the TSB, thanks for the heads up! :-)
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Old 04-22-2019, 12:53 PM
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Originally Posted by dezymond View Post
Not covered under warranty then I'd take it to an independent mechanic
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.
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Old 04-22-2019, 12:54 PM
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Originally Posted by EE4Life View Post
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.
No love on the TSB, different code, different bank. But thanks!
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Old 04-22-2019, 04:18 PM
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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.
(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.
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Old 04-22-2019, 06:01 PM
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Originally Posted by justnspace View Post
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.
I think he's referring to this TSB : http://www.urvi.net/forumfiles/SB/B19-011.PDF

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.
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Old 04-23-2019, 03:50 PM
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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.
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Old 04-23-2019, 03:55 PM
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and here i thought it was CONFIRMED the cat...

seems like you, or whoever, needs to troubleshoot to find the real issue.
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Old 04-23-2019, 03:56 PM
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That is correct. P0420 is the rear downstream oxygen sensor. Don't change the cat until you've investigated that sensor.
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