Can You Still Drive with a Faulty Oxygen Sensor?

[LeVera]

Automobiles typically have two oxygen sensors: the front oxygen sensor and the rear oxygen sensor. If the front oxygen sensor is faulty, you should not continue driving and need to replace it as soon as possible. If the rear oxygen sensor is faulty, you can continue driving without urgent replacement. Below is an introduction to oxygen sensors: 1. Automobiles usually have two oxygen sensors, one front and one rear. The front oxygen sensor is generally installed on the exhaust manifold, while the rear oxygen sensor is installed behind the catalytic converter. They play different roles in the exhaust system, so the symptoms of damage will also vary. 2. If the front oxygen sensor is damaged, you must not continue driving and should replace it promptly. Otherwise, it may cause engine idle vibration and increased fuel consumption. If the rear oxygen sensor is damaged, since it only monitors the condition of the catalytic converter, you do not need to rush to replace it immediately. 3. The automotive oxygen sensor is a critical feedback sensor in the fuel injection engine control system. It is a key component for controlling vehicle exhaust emissions, reducing environmental pollution, and improving fuel combustion quality in the engine. There are two types of oxygen sensors: zirconia and titania.

[DamianFitz]

Having driven for over a decade, I can say that once the oxygen sensor fails, the car might still run superficially, but I firmly believe replacing it immediately is the best course of action. It directly affects the engine's air-fuel mixture ratio, leading to a significant spike in fuel consumption by several tenths. Not only does the car feel noticeably sluggish, but it also emits black smoke, polluting the environment. Worse yet, prolonged neglect could damage the catalytic converter, doubling the repair costs. My advice is to get it checked immediately if the check engine light comes on or if you notice abnormal fuel consumption. Don’t try to save trouble by driving long distances, risking a breakdown on the road. Replacing a new part doesn’t cost much but ensures safety and saves expenses—that’s the smart choice. Regular inspections can also prevent similar issues, especially for owners of older cars who should be extra vigilant.