What Causes Sensor Failures in Volkswagen Tiguan?

[Paislee]

Sensor failures in Volkswagen Tiguan are caused by mechanical damage or wiring issues. Vehicles are equipped with various sensors with different functions and installation locations, leading to varying failure frequencies and causes. Untimely replacement of faulty sensors may compromise driving safety. The types and functions of sensors are as follows: 1. Intake Pressure Sensor: Reflects changes in absolute pressure within the intake manifold, providing the ECU (Engine Control Unit) with baseline signals for calculating fuel injection duration; 2. Throttle Position Sensor: Measures the opening angle of the throttle valve, supplying the ECU with reference signals for fuel cutoff, fuel/air ratio control, and ignition timing adjustment; 3. Intake Temperature Sensor: Detects intake air temperature, providing the ECU with data for air density calculation; Coolant Temperature Sensor: Monitors coolant temperature, delivering engine temperature information to the ECU; 4. Crankshaft Position Sensor: Detects crankshaft position and engine speed, supplying the ECU with reference signals for determining ignition timing and firing order; 5. Oxygen Sensor: Measures oxygen concentration in exhaust gases, providing the ECU with reference signals to maintain the optimal (theoretical) fuel/air ratio; Knock Sensor: Mounted on the engine block to specifically detect engine knocking conditions, enabling the ECU to adjust ignition timing based on the signals.