Technician A says a defective throttle position (TP)sensor will not affect the EGR valve operation. Technician B says a defective engine coolant temperature (ECT)sensor will not affect the EGR valve operation. Who is correct?

Question

Quizplus · Accepted Answer

A defective throttle position sensor can affect EGR valve operation because the EGR system may use throttle position information to regulate exhaust gas recirculation. Similarly, a defective engine coolant temperature sensor can affect EGR valve operation because the EGR system may also use coolant temperature information to determine when and how much to recirculate.

Technician a Says a Defective Throttle Position (TP)sensor Will Not