2001 S80 Smog Check options P0434, P1618, P0422 codes

[uxicorp]

California has sent me the dreaded smog check letter (even though I passed smog check 15 months ago grrr). My car has a check engine light and I've metered it and it says:

P0434 main catalyst below threshold
P0422 main catalyst below threshold
P1618 (what does this mean???)

When at idle, the low oil pressure light also comes on.

My car has 200K miles and runs fine. I don't want to do a bunch of repairs and it's definitely not worth replacing the catalytic converters.

Any thoughts on a cheap way to do a temp fix of some kind?

Also, is there any way I can completely disable the computer alerts so they won't come back on and then re-enable them after the smog? Any other suggestions?

[Barledge]

Were you ever able to figure that out