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3 O2 sensors codes (OEM, NOT soldered)

I'm getting codes p0038, p0136, and p0160 on a 05 SE. Both upstream and the front downstream were replaced with OEM sensors and the rear downstream is an AEM EUGO. Other mods are OBX headers and Borla catback. Both downstream also have the nonfoulers on them. Any ideas as to why i'm getting these codes even with OEM replacement sensors? Ground issue?

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