98Z28MASS

iTrader: (6)

Hey everyone, just got my SES light codes scanned and they came up with these three. First one, P0410 says the PCM determined a malfunction in the secondary air injection system. P0412 says PCM determined a malfunctions in the electrical circuit for switching valve "A" of the secondary air injection system. Finally, code P0418 says the same thing as code P0412. Any ideas on what these codes mean? I believe its just the air system that heats up the cats, but Im not 100% sure...also, will it affect performance at all? Finally, should I just have them deleted or do I need to fix anything? BTW these codes came on 2 weeks after I installed my mac headers with catted y-pipe (I kept the air + egr). Thanks!

01_SuperSlow

iTrader: (7)

You should post this in the PCM and Diagnostics section.

98Z28MASS

iTrader: (6)

oh my bad, im used to the LS1.com format, ill post there now, thanks!

family sedan

iTrader: (3)

Just have them deleted.