CEL codes P1151 & P1152

[collinselectric5]

If I'm not mistaken the 1151 code is bank 2 running lean & the 1152 code is bank 2 running rich. How can it be reading both lean & rich? I also have a small oil leak that I haven't pinpointed where it's coming from but it's leaking oil onto my drivers side 02 sensor before the cats (upstream?) If that side is bank 2 then maybe the 02 sensor is bad sending both CEL codes?

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[07GtS197]

That leak can be whats causing your problem then. Both codes are for bank 2 sensor 1, which is what youre referring to. Clean the connector, fix the oil leak, reset the ecu and see if any codes pop back up.