If you need a oxgen sensor will that cause your cadillac convertor make noise like a pipe is missing???,
My car has 117000 miles.
My car has a manual transmission.
No. Not unless the O2 sensor has been broken off. I have never seen one broken off though. You may have a broken exhaust pipe or manifold. You may also have a blown manifold flange gasket.
Have an inspection of the exhaust system performed to see what is leaking. A leak may cause O2 sensor codes.
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