TOAF
The Poles never got the reading of the MEMS or the SRS quite right, however the fault codes relating to the downstream HO2 sensor are a red herring, your car doesn't have one, the SRS fault will be due to any repair you carried out on that circuit.
As all errors on every ECU on your car were cleared two weeks ago, and specifically the ECM, I wouldn't worry too much about them
Brian