O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)

You can drive short distances. A slow O2 sensor on bank 2 causes the PCM to react slowly to air-fuel ratio changes on that bank, resulting in slightly reduced efficiency and emissions performance.

O2 sensors degrade over time due to exposure to high exhaust temperatures and contaminants. The sensing element gradually loses its ability to react quickly. Contamination from oil, coolant, or excessive fuel additives accelerates this process.

Yes. P0133 is the slow response code for bank 1 sensor 1, and P0153 is the same fault on bank 2 sensor 1. The diagnostic approach is identical.

The OBD II regulation requires four separate detections for an oxygen sensor (Title 13 CCR 1968.2, section (e)(7.2)): deterioration in voltage, response rate or amplitude that would push emissions past 1.5 times the FTP standards; loss of circuit continuity; out-of-range values; and the case where the sensor has degraded enough that the fuel system stops using it and falls back to open loop. A sensor can therefore set a code while still producing a signal that looks plausible on a scan tool. This is the threshold the monitor is designed around, not a description of your specific fault — the regulation says what the system must detect, not how to find it on your vehicle.