Is the fault code reported by a new car a quality issue?
1 Answers
New car reporting fault code is a quality issue. Main hazards: The engine fault light is a problem that no car owner can ignore, as it is directly related to engine lifespan and driving safety. When the engine fault light comes on. Specific reasons: Poor quality gasoline that does not meet standards is a common experience for most car owners. Shortly after refueling, the engine fault light on the car's dashboard may illuminate. This is usually because low-quality gasoline was added at an unregulated gas station, leading to incomplete combustion of the air-fuel mixture during engine operation, which triggers the engine fault light. While this does not affect driving safety, it can still harm the engine to some extent. Oxygen sensor failure is another cause. Modern cars are equipped with two oxygen sensors, one before and one after the three-way catalytic converter. The front oxygen sensor detects the air-fuel ratio under different engine operating conditions, and the ECU adjusts the fuel injection amount and calculates the ignition timing based on this signal. The rear sensor mainly monitors the performance of the three-way catalytic converter. If the oxygen sensor is damaged or its connector is loose, it can cause the air-fuel mixture to be too lean or too rich, triggering the fault light. In reality, the oxygen sensor is a highly durable component and can last for 3 years or longer if the fuel quality is good. Therefore, if the fault light comes on in a new car, it is advisable to check whether the oxygen sensor connector is loose.
