Question Asked: How can you test an EGR temperature sensor to see if it's bad?
September 12, 2010, 11:30 AM
I have a P0401 code up solid. I have changed the EGR valve and modulator. I suspect the EGR temperature sensor is bad, but I do not want to spend $175 to find out. Can I measure the detector with a Meter to see if it is bad? What should I expect to see if it is still working? "