Oxygen sensor code P0135 (or P0030) Bank 1, sensor 1

The codes never mean the sensor has failed. The codes indicate a concern within the related circuit that needs troubleshooting performed. You could have a wiring issue, or perhaps some other input negatively influencing the affected circuit. I would recommend seeking professional assistance, unless you want to invest in all needed test equipment and workshop manuals. www.repairpal.com/repair-shops