How to Deal with NOx Sensor Failure?

[RosalieLynn]

There are three methods to handle NOx sensor failure: 1. Check if the sensor probe is dirty or damaged; 2. If the sensor's own plug is damaged, replace the sensor; 3. Check if the connector wiring harness is securely connected. The functions of the sensor include the following three points: 1. Oxygen sensor: Detects the oxygen concentration in the exhaust; provides the ECU with a reference signal to control the fuel/air ratio near the optimal value; 2. Intake air temperature sensor: Detects the intake air temperature; provides the ECU with data to calculate air density, detects the coolant temperature, and provides engine temperature information; 3. Throttle position sensor: Measures the opening angle of the throttle; provides the ECU with a reference signal for fuel cutoff, control of the fuel/air ratio, and ignition timing correction.