Questions tagged [p0430]

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Just changed catalytic converter and getting P0171 and P0430 codes

Vehicle is a 2004 Mercury Monterey, V6. Over the winter the injectors were replaced, and all 4 O2 sensors. It failed a state inspection, because the catalytic converter had been damaged, presumably ...
James Doyle's user avatar
2 votes
1 answer

help me understand Dodge code p0430

2004 Dodge Ram 1500 4.7 had a bank 1 sensor 1 code come on so I changed that sensor along w/plugs and coils, then drove about 2 miles truck started missing little. Code now reads P0430 and seems ...
michael Wayne's user avatar
4 votes
0 answers

Nagging P0430 (and now a pending P0420 too!) 2004 Lexus ES330

I've got a 2004 ES330 (2nd owner) with roughly 315,000. We didn't pay much for the car in 2012 with 164,000 miles. So, i've never gone overboard in maintenance of it. A year ago, when it was time for ...
MJBeaten's user avatar
3 votes
3 answers

Is my catalytic converter bad?

I have a 2006 Lexus LX 470 and I’m getting the check engine light on. I have a reader and I am seeing P0430 “ catalyst efficiency below normal (bank 2). I took some data from the sensors and plotted ...
clintsmith's user avatar
1 vote
1 answer

Hundai P0430 DTC

On a 2005 Hyundai Santa Fe, I have a P0430 code. The description is "Catalytic converter below efficiency, bank 2". How many O2 sensors are there and where are they? Also which one(s) could contribute ...
BrianK's user avatar
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1 vote
2 answers

P0430 (Catalyst System Efficiency Below Threshold) Toyota Camry 2005 V6

I have a 2005 Toyota Camry V6. The check engine light was on for while and I cleared it once using an OBD2 reader. It didn't come up for while. I used the .87 petrol and I thought that is what ...
still_learning's user avatar
5 votes
1 answer

How to determine if P0430 is O2 or catalytic converter

2009 CTS4 3.6L P0430 catalyst below efficiency bank 2 comes on periodically. (There are no other codes being thrown.) I put a data logger on it today on my drive to work and the rear sensor is ...
Matt's user avatar
  • 245
1 vote
1 answer

OBDII Codes P0304 and P0430

On a 2005 Lexus RX330: P0304 Cylinder #4 misfire. What is the cause and is it a big job to fix? P0430 Catalyst system efficiency below threshold - Bank 2. Is this a big job? Is it OK to run the ...
ahamed's user avatar
  • 71