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VE p0430 code issues

Craft1979

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Hi again thought it would be easier to start a new thread I keep getting p0430 code every 2 to 3 weeks I have done both passenger side o2 sensors also the cats have been done 12 months ago has new spark plugs and coil packs has me stumped also on my last thread I was asked for live data picks so here they are as I am still learning how to use obd2 reader if anyone has any ideas as what’s causing this code to keep coming up would be greatly appreciated the car is a 2011 ve series 2 sv6
 

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lout

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try swapping drivers and passenger side O2 sensors and see if code moves
did you fit genuine sensors or questionable quality
 

Craft1979

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try swapping drivers and passenger side O2 sensors and see if code moves
did you fit genuine sensors or questionable quality
I replaced with genuine sensors but as u say swap passenger to drivers the p0430 is passenger side issue also I tried to do that pryer to paying for a second o2 sensor and I can’t remove drivers side front sensor even with the right tool as it’s jammed
 

lout

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the code indicates a post cat sensor
 

kwaka738

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I have a similar issue with my 2008 Alloytec VE except it's on the driver's side so therefore it's P0420. Mine sometimes goes 6 months so I just reset it. The driver's side catalytic converter was replaced when it initially happened (November 2011 and $580!!) but six months later, the check engine light came on an again it was P0420. I'm going to wait until it stays on before I take it somewhere. It's happened 26 times since 2011 (average 3 times a year). I know if I take it somewhere they'll mess around with sensors..... but I'll have no confidence it's been fixed and that is why I waiting for it to stay on and not reset.

However I have one suggestion just in case something weird is happening. If the oxygen sensors are the same, try swapping over the one before the cat with the one that is after the cat and just see what happens. It's also possible the cat that was installed is not up to scratch (though unlikely).

I'm most interested in the outcome.
 

lout

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just looked at your screen shots
twice you scanned b1s1, first time 0.735v, second time 0.120v
maybe wait until warmed up and rescan
is this ss stock?
 

Craft1979

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Yeah u can’t swap post and pre cat sensors as they are different
 

Craft1979

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Car was warm just came back from shop and it is a sv6
 

Craft1979

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just looked at your screen shots
twice you scanned b1s1, first time 0.735v, second time 0.120v
maybe wait until warmed up and rescan
is this ss stock?
Car was warm just came back from shop car is sv6
 

lout

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should have looked at cat temps 400c instead of 3 minute run time
i think your seized o2 is the problem one
went from a reasonable reading to lean
 
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