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Mexico
New User
Jun 27, 2023, 10:04 PM
Post #1 of 9
(4793 views)
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2011 Honda Pilot p0430
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Another day I was driving and there was an aluminum wire that my battery is tight up to the car was loose. As a result I had bad misfire which lead to poisoning both catalytic converters – p0430 p0420. Then I bought 2 OEM used cats from another 2012 pilot and replaced. But the radiator side cat did not have a hole for O2 sensor, so I drill a hole and welded the thread (I assume there should be any leak, should have been done properly). Now I still have p0430 left (radiator side cat).
OBD2 is showing that voltage of oxygen sensor bank2 sensor 2 – is steady on idling 0.5-0.7v, but fluctuate between 0.150 – 0.600 once I rise my rpm to 3000.
Infrared thermometer shows about same temperature on the top of cat and on the bottom.
Also I did not change the metal gasket that on pipe from cat to EGR valve (i removed the pipe when was replacing the cat) – but it is far on top, quite unlikely that oxygen can move from the top down that pipe to the O2 sensor. Or can it?
Any suggestions how to find what is causing this code? Is this Cat also bad? Or something else? How to make sure that it is a cat?
Thanks for helping!
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 28, 2023, 12:37 AM
Post #2 of 9
(4777 views)
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Re: 2011 Honda Pilot p0430
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Sounds like a pretty hacked up attempt to fix this.
First order is fix the cause. Is that loose wire fixed? How long did you drive it running lousy?
USED converters! What did you expect - really!
Causes include a list of things to check and solve first such as these things.......
*Faulty Three-way Catalyst Converter Bank 2
*Exhaust Tube
*Intake Air Leaks
*Faulty Oxygen (O2) Sensor
*Faulty Fuel injector(s)
*Leaking Fuel Injector (s)
*Faulty Spark plugs
*Improper Ignition Timing
*Faulty Engine Control Module (ECM)
*Dirty Air Filter
I'm sure there's more too. I know costs matter I don't think you'll be too happy but should seek help with this or at least an in person diagnosis of overall engine condition if this one is a lost cause??
Tom
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 28, 2023, 3:43 AM
Post #4 of 9
(4753 views)
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Re: 2011 Honda Pilot p0430
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Yes for now a drilled hole where there wasn't one! IDK, I've seen one moved, close because of breakage but one was designed to be there.
Actually shocked the first thing the junkyards do is cut off converters (wrecks - hopeless vehicles) the metals are so valuable,
Tom
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 28, 2023, 11:00 AM
Post #6 of 9
(4720 views)
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Re: 2011 Honda Pilot p0430
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Cut and pasted generic things found on the Internet aren't going to resolve your issue.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jun 28, 2023, 11:01 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 28, 2023, 2:30 PM
Post #8 of 9
(4700 views)
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Re: 2011 Honda Pilot p0430
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The previous answer you were given were just copied and pasted from a DIY Internet site with general problem areas. Anybody could have Googled that. Nothing specific.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jun 28, 2023, 2:31 PM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 29, 2023, 12:15 AM
Post #9 of 9
(4651 views)
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Re: 2011 Honda Pilot p0430
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OP = "Mexico"-
Refresh this and read your first post. Somehow, wrong battery or installation shorted and caused this? It ran like crap (no surprise) and kept on driving it?
Who can know what the short caused or what code that would cause to show now up to used WRONG converters is just adding insult to injury not knowing for sure from a code what damage was really done?
Not much to know here now and believe.
Ends up a "rock and hard place" of what went all wrong in the first place.
Said first it's all hacked up there's no standard of what permanent damage has happened is like collision damage that renders cars a total loss.
Think. Those used converters came from what OEM supposed to match? Apparently not for this one or this one wasn't OEM when you got it.
At some point just the hours of professional time is going to out cost this car? Tom
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