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P0133: Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1
The upstream oxygen sensor is switching slower than expected.
Common causes
- Aging oxygen sensor
- Exhaust leak
- Contaminated sensor
- Wiring resistance
This free page explains the code. A Shop Brief adapts the next steps to your year, make, model, and full code stack.
Related codes:
P0420P0171P2096 Pricing Sample brief