The primary purpose of an oxygen sensor is to monitor the amount of oxygen in the exhaust gas and provide feedback to the engine control unit (ECU). The ECU then adjusts the fuel mixture to maintain the desired air-fuel ratio for optimal performance and emission control.
While a faulty oxygen sensor can lead to various engine issues, such as reduced fuel efficiency, rough idling, and check engine light illumination, it typically won't cause the engine to shut off abruptly.
However, in certain circumstances where the oxygen sensor malfunctions and provides incorrect feedback, it could lead to severe engine problems. For example, a faulty oxygen sensor may cause the ECU to adjust the fuel mixture incorrectly, resulting in a lean or rich condition. In extreme cases, this can cause engine damage, including potential stalling or engine shutdown.
Therefore, while an oxygen sensor failure generally doesn't directly cause the car to turn off, it's crucial to address oxygen sensor issues promptly to prevent potential engine damage and maintain the vehicle's overall performance and efficiency.
