Sorry about the lateness of the response. I have jumped out the pump and have replaced the solenoid. There is power to the plug on the solinoid, but it doesn't switch over to allow the vacuum to move through it. I tried switching the hose to the vacuum tree to see if that would do anything and no lu...

Hey there. I am having an issue with my sel turning on every time I start my 1997 850 glc. The light stays on for about 5km or so then turns off. I hooked up my code reader and found that it is a p410 error. I have checked the hoses and even put the diode on my Bosch ecm. That didn't stop the light ...