I see the P0131 is Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 1.

The P0151 is Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1. The other two I see are for the rear O2s so yes I think your correct about a cat problem but the first two are for the fronts. Everybody is telling me it's running out of fuel but honestly it doesn't run like it is. It does stay in open loop when it sets this code.