- Check Engine Light: The oxygen sensor is monitored by the vehicle's engine control unit (ECU), and a faulty oxygen sensor can cause the Check Engine Light to illuminate on the dashboard.
- Rough idling: A faulty oxygen sensor can cause the engine to run rough or stall, especially when idling.
- Poor fuel economy: A faulty oxygen sensor can cause the engine to run rich or lean, which can lead to reduced fuel economy.
- Hesitation or stalling: A faulty oxygen sensor can cause the engine to hesitate or stall when accelerating or decelerating.
- Black smoke from exhaust: A faulty oxygen sensor can cause the engine to run rich, which can lead to black smoke coming from the exhaust pipe.
- Strong fuel smell: A faulty oxygen sensor can cause the engine to run rich, which can also create a strong fuel odor.
- Decreased performance: A faulty oxygen sensor can reduce the engine's performance, making it feel sluggish and unresponsive.
- Increased emissions: A faulty oxygen sensor can cause the vehicle's emissions to exceed legal limits.
If you are experiencing any of these symptoms, it is recommended that you have the oxygen sensor checked by a qualified mechanic. A faulty oxygen sensor can cause damage to the catalytic converter and other exhaust system components, so it is important to address the problem as soon as possible.
