Welcome Dan the rug man
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"I have codes showing 0135, 0136 & 0137."
Disconnect Fuse 11 in the Power Distribution Box next to the battery for 2 minutes or so. Then drive it for a few days and see which codes come back. It could be the connector at the PCM (next to the Power steering reservoir on the passenger side). You have both upstream and downstream codes. And yes, the Bank 1 (firewall side) upper and lower sensors could be gone at 75k miles.
Bosch O2 sensors are fine. Get them from Autozone or Advance if you need them.
