O2 Sensor Slow Response B1S1
The upstream O2 sensor on bank 1 is responding too slowly to changes.
Informational only. Consult a qualified mechanic.
- Aging O2 sensor
- Exhaust leak
- Fuel system issue
Replace the O2 sensor.
What does P0133 mean?
The P0133 OBD-II diagnostic trouble code (DTC) indicates: o2 sensor slow response b1s1. This is a medium-severity powertrain code that your vehicle's onboard diagnostics system triggers when the upstream o2 sensor on bank 1 is responding too slowly to changes. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
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