Is the sensor covered by warranty at a 4S shop?
1 Answers
It is covered by warranty if it is within the warranty period. Below are specific introductions about automotive sensors: 1. Oxygen sensor: When the oxygen sensor fails, the ECU cannot obtain information and does not know whether the amount of gasoline injected is correct. An inappropriate air-fuel ratio will lead to reduced engine power and increased emission pollution. 2. Wheel speed sensor: It collects the car's speed to determine whether there is a sign of skidding. It is generally installed on the hub of each wheel. Once the sensor is damaged, the ABS will fail. 3. Water temperature sensor: After the water temperature sensor fails, the temperature signal displayed during a cold start is that of a hot engine. The ECU cannot obtain the correct signal and supplies the engine with a leaner mixture, making it difficult to start the engine when cold and accompanied by unstable idle operation and insufficient acceleration power. 4. Electronic throttle pedal position sensor: After the sensor fails, the ECU cannot measure the throttle position signal and cannot obtain the correct position of the throttle pedal, resulting in weak engine acceleration or even the inability of the engine to accelerate. 5. Intake pressure sensor: The intake pressure sensor senses a series of resistance and pressure changes with different engine speeds and loads, converting them into voltage signals for the ECU to adjust the fuel injection amount and ignition timing angle. It is generally installed near the throttle valve. A fault can cause difficulties in ignition, unstable idle, and weak acceleration.
