Code P0133 - Oxygen Sensor Circuit Slow Response. This code indicates the engine fuel/air ratio is not being adjusted by the oxygen sensor as expected. Part of the `P01xx - Fuel and Air Metering` family of codes.

learn more… | top users | synonyms

4
votes
1answer
814 views

'Check Engine' code P0171 System Too Lean - Is it safe to drive?

My 2003 Toyota Corolla's Check Engine Light came on. I read the codes using an OBD code reader and got P0171 - System Too Lean (Bank 1) and P0133 - 02 Circuit Slow Response (Bank 1, Sensor 1). The ...