po4030

[forbie]

Any body know what causes it. I reset it once and it went away for a couple of weeks. Catalyst efficiency below threshhold bank 2.

Thanks

[mrr23]

exactly what it means. time to replace the cat. if it's a factory cat, you can take it to the dealer for a free replacement so long as it's 8/80k

[2001NBMZ28]

Passenger side cat - lots of posts here on P0420 and P0430.

[forbie]

Thanks. 2000 with 30 k So I should be covered

[2001NBMZ28]

Know a couple people who had their's replaced free at the dealership. When you call they'll tell you "diagnostic fee, could be 02, road damaged cat, etc." Neither had to pay a penny. Leave the SES on when you take it in. You can also swap the rear 02's from side to side if you want to verify it.

[SeVeReDiStOrTiOn]

30k is low miles for a cat to go out....but it does happen. Hopefully there's not another problem that caused the cat to go bad....like a blown headgasket. Are you having any overheating probs with it?

[Mark01WS6]

Mine went out at ~ 45k. Dealership replaced it for free, no questions asked