C5Blake

My check engine light has been on. I got diag. ran today and codes as follows: po138 o2 sensor circ. high volts ( bank 1 sensor 2) , po140 o2 sensor ckt no activity ( bank 1 sensor 2) , po160 o2 sensor ckt no activity ( bank 2 sensor 2) , po410 secondary air injection system malfunction. Anyone know what that po410 may be? Also, does anyone have any suggestions on what to do about all those o2 sensors codes? Thanks a lot for any help yall.


Thank's a lot,
Blake

Lady Redhawk

iTrader: (6)

Need more info. What kind of car is it? What year is it? What are your mods? Have you just installed headers? Removed the air system hoses?

C5Blake

It's a 98 corvette with an MTI head and cam package, it does have headers. The person who had it before me had a 100 dry shot on it, butI don't. I'm not sure on those hoses.


Blake

distortion_69

iTrader: (20)

TTT. I'm having the same probs

Peace,
Josh

Team ZR-1

P0410 Secondary Air Injection System Malfunction
is just what it means, you need to check it out to see if its functioning correctly.
Being it only is on when the engine is cold for about the 1st 3 minutes, with a cold engine turn key on and listen to see if the AIR electric motor comes on.
If it does work correctly then you need to check the checkvalves, one for each head goes into the exhaust manifolds.
If motor does not work check for a blown fuse.
Since it has headers the last owner may have even removed the AIR so see if the AIR plugs into them.
As to the rear 02s, they also may have taken them off so you'll have to check and 1st see if they are installed, if not you either put some in or have their error codes turned off by having the PCM tuned.