I have check eng code P0411-secondary air injector system incorrect flow detected. What do i check and were is it, how to fix it. Thanks Bob!
Dec 30, 2008 at 1:10 PM
2001 Cadillac Catera eng code
2001 CADILLAC CATERA
WINGED47
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Hello
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You may have a faulty oxygen sensor. Located on the exhaust, under vehicle, usually more than one oxygen sensor.
However, it is probably more complex than that. I suggest checking the pipe that connects to the exhaust manifold. If it has cracked then the secondary air will not be forced into the exhaust stream which will prevent the oxygen sensors from sensing the correct flow.
Hope this helps..
Thanks for using 2carpros.com!
Thanks for the donation
You may have a faulty oxygen sensor. Located on the exhaust, under vehicle, usually more than one oxygen sensor.
However, it is probably more complex than that. I suggest checking the pipe that connects to the exhaust manifold. If it has cracked then the secondary air will not be forced into the exhaust stream which will prevent the oxygen sensors from sensing the correct flow.
Hope this helps..
Thanks for using 2carpros.com!
Dec 30, 2008 at 7:52 PM
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