P2238 and P2237 o2 CEL after inspection

Took my 2014 with 40k miles through inspection and passed. A few miles after and the following CEL codes came up:

P2238 - Oxygen Sensor Pumping Current Circuit Low Bank 1 Sensor 1
P2237 - Oxygen Sensor Pumping Current Circuit Open Bank 1 Sensor 1

I cleared the code but it comes back. I took the truck on a long road trip and it got 21.5MPG so I think the o2 sensor is good.

The battery tested good. I just bought the truck and it is really clean so I don't think there is any abuse or mud that caused it.

Any ideas?

 

Open circuit codes are 99% the sensor it calls. B1 S1 A/F Sensor. The truck can get 20MPG with many sensors failing.