Check Engine Error Code PO411

rpgibbs · #1 (**permalink**) 07-21-06, 09:58 PM

Just got a Check Engine Light and had it read out at a local parts store and came up as a PO411 - Secondary Air Injection System Incorrect Flow. Anybody had this before and if so what is the Fix? Car is a 2000 Catera Sport with approx 65K Miles. I have replaced the MAF agbout 5K Miles ago. Thanks

rpgibbs@hotmail.com

rpgibbs · #2 (**permalink**) 07-22-06, 09:32 AM

Any help on This Problem?

netager · #3 (**permalink**) 07-22-06, 09:40 AM

Here is some info. It was discussed at the forum already - use search. It was discussed at Yahoo Catera Owners group, too. Just google "catera p0411" - there is plenty of info. Not PO411, but P0411 - you see the diffference?

rpgibbs · #4 (**permalink**) 07-22-06, 05:08 PM

Would anybody know the GM part # for the Air Check Valve that MAY be giving me this P0411 Error Code? Thanks

netager · #5 (**permalink**) 07-22-06, 06:06 PM

This MAY be helpful.

caberts1 · #6 (**permalink**) 07-24-06, 03:14 PM

Had the same problem about a year ago on my 2000 sport. Read some were that you climb under the car and pull the hoses off the air pump and blow through them and then suck on them to see if they are blocked. I did that and found out that one was clogged, blow it out with my air compressor and have had no problem with it since. I also read that bad gas or gas with to low of octane will all so cause the light to come on with that code. My sport had 50k on it when it happened. Hope i could help