The evap canisters did give problems on the Solara and Camry. Several codes can be set for O2 sensor problems, most common cause is the heater circuit to fail within the O2 sensor itself. Make sure the correct sensor is replaced they are identified bank one sensor one, bank one sensor two, bank two sensor one ect....
The sensors can also fail performance wise. The purge flow needs to be investigated but first look yourself for hoses disconnected at the air filter housing, at the valve near the air filter hosing or the rubber hose connected to a metal line near the firewall driver's side. People knock them off when replacing the air filter.