Hi guys I own a 2002 Jetta GlS, 1.8T. Recently I pulled codes on the vehicle and I have a p0411 code after extensive research as far as I understand the possible problems are a bad air pump, combi valve, or Solenoid

The issue is A. Im having trouble finding the secondary injection solenoid, I thought this was it but Im not sure

http://www.mjmautohaus.com/catalog/product_info.php?info=OEM_VAG_058906283F_Boost_Pre ssure_Valve_N75_%22F%22_Valve_OEM&products_id= 1721

I think that it may be the solenoid I hooked a voltmeter to it and I got 12 volts of power to the solenoid but upon turning the car on or putting the ignition on I couldnt hear the solenoid switch on. I assume its the solenoid the car's still running great the only evidence of this is the check engine light but I feel I may be wrong about that solenoid as it costs 108 dollars and other forums said it only costs like 8 to 11 and I feel maybe Im going after the wrong thing here. If any of you can help me out could you tell me where the solenoid is?


Mon Jan 26, 2009 10:21 pm

 

From what I gather, the problems would be Secondary air injection system, incorrect flow. Is that what you downloaded??

 

Yes that is correct, It turned out not to be the solenoid, I went ahead and replaced it and check engine light came back on so Im guessing its a bad combi valve the air pump is working I can feel a vaccueem when I place my hand on the solenoid valve.

Thats correct the problem is with the secondary air injection system incorrect flow

 

I need advice, I dont know what to do at this point to fix this problem I ran a smoke test through the air system and I had no leaks so I ruled that out but thats all Ive got atm