Check all the wires first mate, it could be a fried wire.

13 O2 sensor 1 open circuit
89 O2 sensor 2 open circuit

I might be wrong but it looks like you have 2 knackered sensors.
other members will no doubt point you in the right direction.

I had to disturb the cable tray to replace the rocker cover gasket last week, but I think the error was already there, as the eml light flashes since time ago when I start the car.
I'm thinking of replacing the cable from both o2 sensors...