got a p0430 code
10-05-2017, 12:24 PM
#1
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got a p0430 code
So I'm driving along and the check engine light pops on. Get home plug in my code reader and I get P0430 reading. Questions how easy of a fix is it? What exactly does that code mean? What parts will I need to fix it. Any and all help is welcome.
Thanks,
Phil
Thanks,
Phil
10-05-2017, 11:38 PM
#2
JK Jedi Master
Your passenger side catalytic converters are not operating to efficiency. Could be the oxygen sensors. Or could be the cats itself. In my case, with over 200K miles, I first replaced all four sensors. Problem stayed. Replaced cat. Problem went away.
EDIT: If you do decide to replace the cats, recommend that you buy four new bolts and nuts that hold the cats to each exhaust manifold. The old ones will be all rusted up. You'll appreciate working with new hardware. And the nuts have a special retainer to hold them in place, so buy the hardware from the dealer, not your local hardware store.
EDIT: If you do decide to replace the cats, recommend that you buy four new bolts and nuts that hold the cats to each exhaust manifold. The old ones will be all rusted up. You'll appreciate working with new hardware. And the nuts have a special retainer to hold them in place, so buy the hardware from the dealer, not your local hardware store.
Last edited by Mark Doiron; 10-05-2017 at 11:42 PM.
10-06-2017, 02:52 AM
#3
JK Jedi Master
P0430-CATALYST EFFICIENCY (BANK 2)
Bank 2 is the left side of the vehicle, (driver's side).
[TABLE]
[TR]
[TD="bgcolor: white"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]EXHAUST LEAK
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]ENGINE MECHANICAL CONDITION
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]AGING O2 SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]CATALYTIC CONVERTER
[/TD]
[/TR]
[/TABLE]
A new rear O2 Sensor along with an aging front O2 Sensor may cause the DTC to set.
As you can see, there is some troubleshooting to do before buying parts.
Bank 2 is the left side of the vehicle, (driver's side).
[TABLE]
[TR]
[TD="bgcolor: white"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]EXHAUST LEAK
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]ENGINE MECHANICAL CONDITION
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]AGING O2 SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]CATALYTIC CONVERTER
[/TD]
[/TR]
[/TABLE]
A new rear O2 Sensor along with an aging front O2 Sensor may cause the DTC to set.
As you can see, there is some troubleshooting to do before buying parts.
07-12-2018, 07:32 PM
#4
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P0430 trouble code
Just place spark non foulers into the pipe then screw the sensors in after. The spacing will fix the problem if your cat isn't bad, or any other bad exhaust issues arent there to clearly blame. Ethanol blend fuel messes with mine and this fixed the issue along with better fuel
10-21-2022, 03:11 PM
#5
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Join Date: Oct 2022
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P0430-CATALYST EFFICIENCY (BANK 2)
Bank 2 is the left side of the vehicle, (driver's side).
[TABLE]
[TR]
[TD="bgcolor: white"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]EXHAUST LEAK
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]ENGINE MECHANICAL CONDITION
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]AGING O2 SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]CATALYTIC CONVERTER
[/TD]
[/TR]
[/TABLE]
A new rear O2 Sensor along with an aging front O2 Sensor may cause the DTC to set.
As you can see, there is some troubleshooting to do before buying parts.
Bank 2 is the left side of the vehicle, (driver's side).
[TABLE]
[TR]
[TD="bgcolor: white"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO GROUND
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN UPSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]O2 RETURN DOWNSTREAM CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]EXHAUST LEAK
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]ENGINE MECHANICAL CONDITION
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]AGING O2 SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white"]CATALYTIC CONVERTER
[/TD]
[/TR]
[/TABLE]
A new rear O2 Sensor along with an aging front O2 Sensor may cause the DTC to set.
As you can see, there is some troubleshooting to do before buying parts.
10-21-2022, 04:52 PM
#6
JK Jedi Master
I don't know what the 3.5L engine you refer to mounted in, but with the 3.8L engine mounted in a JK, bank 2 is on the left side of the engine, as viewed from the driver's seat.
