What Are the Symptoms of a Bad Front Oxygen Sensor in a Car?
2 Answers
The symptoms of a bad front oxygen sensor in a car are: 1. The oxygen sensor fault light will illuminate; 2. The engine will shake; 3. The exhaust will make a popping sound and emit a pungent odor. The solution for a bad front oxygen sensor is to use a fault diagnostic tool to check the voltage. Precautions for removing the oxygen sensor: 1. Install the socket onto the base of the oxygen sensor and apply force to loosen it; 2. Be cautious of the wiring harness on the oxygen sensor when loosening—do not turn it all the way to avoid deforming or breaking the harness; 3. After loosening, adjust the turning angle back and forth to protect the wiring harness; 4. Socket sizes vary, so ensure the size fits the oxygen sensor before use.
I drove for over ten years, and once my car's fuel consumption suddenly skyrocketed. It felt like every press of the accelerator burned through a lot of money. The acceleration was sluggish, as slow as an old ox climbing a hill, and the engine warning light on the dashboard kept glowing bright yellow. When I stopped to check, the exhaust smelled worse than usual, with a sour tinge. Later, a mechanic found out it was the front oxygen sensor that had failed. This part monitors the engine's air-fuel mixture, and when it goes bad, it can cause the car to burn more fuel or shake. Ignoring it could lead to early engine wear, making repairs much more expensive. My experience taught me that small car issues, if left unfixed, can turn into big problems—regular maintenance is key.
