Tag: 02 sensor

P0133 – Meaning, Causes, Symptoms, & Fixes

Code P0133 Definition O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) What Does P0133 Mean? The O2 sensor (Bank 1, Sensor 1) is meant to communicate with the Engine Control Module (ECM) about the air to fuel ratio of the engine, and adjust it accordingly. This is done in order to limit the amount...