Front Catalytic Converter Replaced at 95,000 Miles
#1
Intermediate
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Front Catalytic Converter Replaced at 95,000 Miles
2014 RDX. "Check emission system" light came on and car felt slightly sluggish. Took car to reputable but expensive independent shop that specializes in Honda/Acura. P0430 code was pulled and diagnosis was "deteriorating catalytic converter", so front catalytic converter was replaced. They were unable to tell me the root cause of failure, only some possibilities.
Did anyone also have catalytic converter fail so early? I drive mostly freeway miles so I expected it to last much longer than this. Frigging disappointed with Acura.
Did anyone also have catalytic converter fail so early? I drive mostly freeway miles so I expected it to last much longer than this. Frigging disappointed with Acura.
#3
Senior Moderator
More likely than not, it was an o2 sensor getting weaker.. Those typically go bad quicker than the Cat..
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justnspace (10-26-2018)
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#12
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It's weird that your RDX would seem sluggish though. In your case, maybe the substrate began breaking down and restricting the airflow. Either that or the shop took you for a ride. Did you confirm that they actually replaced the cat? The P0430 is for Bank 2 which is in the front of the engine. It should look shiny and new. Well, not all that "shiny" since it's relatively unfinished steel. But it shouldn't be rusted or dirty.
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auskip07 (11-01-2018)
#13
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In retrospective I should have replaced the O2 sensor to see if it would fix the issue before taking it to the shop. But the shop i used is reputable and very expensive ($118 per hour labor) so I trust their judgment.
I use Chevron 91 most of the time so most likely quality of fuel is not the issue. I also change fluids myself and I don't use Honda fluid for anything, but I doubt that led to a bad cat either. I am a bit worried that it is burned oil because it was down a quart when I did my last oil change.
Or maybe just bad luck.
I use Chevron 91 most of the time so most likely quality of fuel is not the issue. I also change fluids myself and I don't use Honda fluid for anything, but I doubt that led to a bad cat either. I am a bit worried that it is burned oil because it was down a quart when I did my last oil change.
Or maybe just bad luck.
#14
Burning Brakes
On my 1999 Honda CR-V at 117K miles.
It gave me a code of P0420 (catalytic converter efficiency) for some weeks prior to failing.
There is an 02 sensor upstream and downstream of the catalytic converter and it is what determines the efficiency.
02 sensors have a life of about 100K miles as listed on the Bosch site.
By the way, when I had the original catalytic converter off for replacement, a slew of sand-like material came out which explains why it would not run (blocked the exhaust system).
Bosch site:
Oxygen Sensors should be checked and/or replaced at -
50,000 km for single and two wire sensors.
80,000 km for three or four wire heated sensors.
160,000 km for planar type sensors
It gave me a code of P0420 (catalytic converter efficiency) for some weeks prior to failing.
There is an 02 sensor upstream and downstream of the catalytic converter and it is what determines the efficiency.
02 sensors have a life of about 100K miles as listed on the Bosch site.
By the way, when I had the original catalytic converter off for replacement, a slew of sand-like material came out which explains why it would not run (blocked the exhaust system).
Bosch site:
Oxygen Sensors should be checked and/or replaced at -
50,000 km for single and two wire sensors.
80,000 km for three or four wire heated sensors.
160,000 km for planar type sensors
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