● Crankshaft Position Sensor
Function: Collects crankshaft angle signals and engine speed signals, allowing the cylinders to ignite in sequence.
Fault: May cause the vehicle to fail to start.
● Oxygen Sensor
Function: The front oxygen sensor detects the richness of the air-fuel mixture, while the rear oxygen sensor analyzes data to check if the catalytic converter is functioning properly.
Fault: May lead to decreased engine performance, unstable idle, abnormal emissions, and increased fuel consumption.
● Camshaft Position Sensor
Function: Detects the position and angle information of the camshaft to control the sequence of fuel injection and ignition.
Fault: Can result in decreased engine output power, difficulty in ignition, lack of acceleration, and a persistent fault light.
● Intake Pressure Sensor
Function: Used to detect the absolute pressure in the intake manifold, controlling the amount of fuel injection and throttle opening, and adjusting the air-fuel ratio.
Fault: May cause a sharp increase in fuel consumption, unstable engine idle, frequent stalling, or even failure to start.
● Airflow Sensor
Function: Used to detect the intake volume of the engine, determining the fuel injection amount and ignition timing through signals.
Fault: Malfunction may lead to unstable engine idle, lack of power during driving, black smoke emissions, or stalling during gear shifts.
● Throttle Position Sensor
Function: Used to detect the opening degree and speed of the throttle, controlling the fuel injection amount and timing based on the data.
Fault: May cause abnormal engine idle, shaking or slow response during acceleration.
● Knock Sensor
Function: Used to sense different frequency vibrations of the engine to adjust the ignition timing and eliminate knocking.
Fault: May lead to decreased engine output power, unstable idle, abnormal emissions, and increased fuel consumption.
● Water Temperature Sensor
Function: Used to detect the temperature of the engine cooling water, while correcting the fuel injection amount and timing, adjusting the air-fuel ratio.
Fault: May cause the engine fault light to illuminate, abnormal water temperature display, and limited engine performance.
