1999 SAAB 9-3S Auto with CHECK ENGINE codes P0125, P0135, P0141?

134k.

Over the weekend not long after filling up the gas tank the check engine light went on. Had the codes read yesterday at Autozone...

P0125 - re:fuel coolant
P0135 - Os2 Sensor bank 1
P0141 - Os2 Sensor bank 1

Hard for me to believe both sensors in that bank happened to fail at the same time unless its electrical, something else possibly causing these codes?

I have been commuting a round trip of 70 miles each day this week without issue but do not want to push it. Get regular oil changes, full synthetic and keep maintenance up for the most part. I know a transmission flush was recommended last time I got oil changed.

Thoughts?

in your case u need to go to the saab dealer one thing the dtc u got is very complicated ... dealer tech 2 can read the o2 sensor graph and all read value fr your ecm we can read either cost by the vac. leak or we can test your catalytic performance