[Z06] Check Engine Lite
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Joined: Sep 2002
Posts: 61
Likes: 0
From: San Diego CA
Check Engine Lite
Check Engine Light came on so I ran the diagnostics and it shows P1416 Secondary Air Injection (AIR) System Bank 2. First, what is it? And second, how do you fix it? I have an 03 Z06 with 25K miles and the only mods are an "X" pipe, Borla Stingers, NGK plugs, and a modded intake cover with a K&N filter. Thanks Guys.
Note: It shows History and Current.
Jefe
Note: It shows History and Current.
Jefe
Last edited by jefe; Apr 18, 2006 at 03:44 PM.
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
It's the AIR check valve on the passenger side. It's function is to let more fresh air into the Cats during cold starts to warm them up faster. Unfortunately the number 2 valve is behind the intake manifold against the firewall. To replace the valve you can find info in the Tech Section. This is a common problem.
I got that and tried the following. The #1 check valve is on the drivers side. The tubes come off the exhaust manifold and where they come together you see a valve. On the back of the valve you see the rubber tubing that goes to the rear one. With the car completely cold. I just disconnected the tube, sprayed a bunch of WD40 in there, then started the car. Repeated it a few times. Cleared codes and haven't seen it since. Apparently this valve sticks from either rust or carbon buildup from the exhaust gasses.
I got that and tried the following. The #1 check valve is on the drivers side. The tubes come off the exhaust manifold and where they come together you see a valve. On the back of the valve you see the rubber tubing that goes to the rear one. With the car completely cold. I just disconnected the tube, sprayed a bunch of WD40 in there, then started the car. Repeated it a few times. Cleared codes and haven't seen it since. Apparently this valve sticks from either rust or carbon buildup from the exhaust gasses.
