NotSoStock99TA

My SES light is on and my inspection is 5 months out of date...I need the car inspected ASAP, but I don't know what I need to fix in order to fix these codes. The trown codes are:

P0410 "secondary air injection malfunction"

P0412 "secondary air injection valve A malfunction"

P0418 "secondary air injection relay A malfunction"

P0420 "catalyst efficiency below threshhold (bank 1)"

P1416 "manufacturer's controlled auxilary emissions control"

What do I need to do to the car to fix it and get rid of these trouble codes?

Thanks.

greatwhite99

did you remove the AIR pump? Have you removed EGR?

2001NBMZ28

If you still have AIR, first thing to check for the first 3 codes is the AIR PUMP fuse under the hood. P0420 is a bad drivers side cat or rear 02 sensor. The last one is a bad/clogged passenger side air check valve.

NotSoStock99TA

Thanks for the help guys. No I haven't removed the EGR or the air pump, so I will check out what you suggested. Thanks a lot.

2001NBMZ28

You can look up the diagnostics for your year for each code at gearchatter.com