Author Question: A vehicle comes into the shop and the technician retrieves the diagnostic code P0401 "EGR flow ... (Read 120 times)

CharlieWard · **on:** Aug 13, 2021

Question 1

A typical EGR pintle-position sensor is what type of sensor?
◦ Potentiometer
◦ Rheostat
◦ Wheatstone bridge
◦ Piezoelectric

Question 2

A vehicle comes into the shop and the technician retrieves the diagnostic code P0401 "EGR flow insufficient." Which of these could be the cause?
◦ Clogged EGR ports or passages
◦ EGR valve stuck open
◦ Electrical wiring shorted
◦ All of these are correct.