1997 BMW 528 Check Engine Light Codes

Look to the left of the screen, do you see the trouble code table under where it says popular site links, go there for your definition of the trouble codes. Knowing those cars like I do, the issue is probably the little vacuum hose to the secondary air valve has cracked and will require replacement. It can be seen at the front of the right side of the motor just forward of the exhaust manifold, the small round thing with the black hose (vacuum line) running into it.