Hi there.
I have vauxhall Corsa 1 l petrol and measured both wires on Egr selonoid, plugged and unplugged.
Plugged/ unplugged
Feed wire 12V/12V
Signal wire 12V/3.65V
My question is, why do I have voltage in my feed wire? I thought bias voltage was only read on O2 sensor or a knock sensor...