What type of sensor is often used to by the PCM to determine SCR effectiveness?
A) Dosing sensor.
B) Oxide sensor.
C) Oxygen sensor.
D) SCR outlet temperature sensor.

Question

Quizplus · Accepted Answer

The PCM (Powertrain Control Module) often uses an oxygen sensor to determine the effectiveness of the SCR (Selective Catalytic Reduction) system. The oxygen sensor measures the amount of oxygen in the exhaust before and after the SCR system. By comparing the two values, the PCM can determine how well the SCR system is reducing NOx (nitrogen oxides) emissions.

What Type of Sensor Is Often Used to by the PCM