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Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Thu Nov 01, 2018 7:22 pm
by kevm14
Light still out. Probably jinxed it.

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Sun Nov 18, 2018 5:02 pm
by kevm14
kevm14 wrote:Dumped in 2 bottles of Techron concentrate.
Code has not been back, and there has definitely been some cold weather. I am sure it is not gone forever but the Techron did seem to help.

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Sun Nov 25, 2018 8:17 pm
by kevm14
Finally came back. Reset again.

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Thu Nov 29, 2018 7:01 pm
by kevm14
So the light came back on like Monday or something. But I just scanned it. My generic tool says MIL not set, though one system not ready (forgot to check which system, maybe catalyst monitor?). Checked pending and stored codes. Nothing. This would be the first time I've seen a check engine light that I actually need the Tech 2 to read. Adam will bring tomorrow. Curious what it is. Must have been a module other than the ECM. Not all things result in a MIL though so....must be trans?? Will make a new thread when I scan it, depending on what it is.

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Fri Dec 14, 2018 8:51 pm
by kevm14
P0430 again. Reset w/ generic tool.

Needs more Techron?

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Sat Dec 15, 2018 6:14 pm
by kevm14
Came on again tonight, less than 24 hours later, though after a long day of highway driving. Sigh. Reset again.

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Sun Dec 23, 2018 7:25 pm
by kevm14
Came on again after getting gas. Added 2 bottles of Techron.

I am becoming alarmed that I may actually need to replace the bank 2 cat at some point...maybe I'll do the engine mounts at the same time and have a real field day with it.

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Fri Jan 11, 2019 7:15 am
by kevm14
MIL is back, or was back yesterday morning. Haven't scanned yet. Assuming P0430. If not I will delete this...

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Sat Jan 12, 2019 2:38 pm
by kevm14
kevm14 wrote:MIL is back, or was back yesterday morning. Haven't scanned yet. Assuming P0430. If not I will delete this...
Checked w/ generic reader. P0430 as suspected. Did I ever figure out which side is bank 2? I would think it is the passenger side...

Re: 05 STS P0430 (bank 2 cat efficiency)

Posted: Sat Jan 12, 2019 2:50 pm
by kevm14
Looks like Bank 2 is the driver's side. Which is the side that the FSM says requires the removal of the steering rack. I will look into what people have done for DIY jobs but this isn't going to be very high on my list unless I can't actually pass emissions (i.e. once reset, the light comes back too quickly or not enough systems are ready after a reset).