FIXED: 2008 335xi Check Engine Light - Half Yellow Code: 30FE

FL335 · 10-02-2015, 11:19 AM

Vanos Solenoids. I get the 3100 and the other 29XX code. I am in need if new ones as I already pulled them out, cleaned and swapped them. My guess is this is the problem.

secrethero · 10-02-2015, 12:39 PM

Quote:

Originally Posted by FL335

Vanos Solenoids. I get the 3100 and the other 29XX code. I am in need if new ones as I already pulled them out, cleaned and swapped them. My guess is this is the problem.

I am getting 30FE and 3100. Every time. Not other codes.

3100 seems to be result of 30FE. In your case because of 29XX.

secrethero · 10-23-2015, 06:24 PM

I took the car to another mechanic that is specialized in German cars.
He was able to reproduce the problem easily.
Checked vacuum lines, wastegate, hoses and found that one of the (front) Pressure Controller/Boost Solenoid (aka Wategate Solenoid) was the rootcause of this problem. Replaced the part and it’s all good.
According to BMW both needs to be changed but we only changed the bad one.

I am looking at the old/bad Pressure Controller and part number is 11747548706 OEM Brand by Pierburg.
According to invoice new part number is 11747626350. I can’t tell what the brand is but it cost $210 CAD.
Same part (by Pierburg) at autopartsway.ca is $98 CAD.
http://www.autopartsway.ca/partdetai.../pagenum1/tabs

Not sure which one the mechanic is installed but cost more than twice.
Total cost = part + labor + diagnostics = around $500 CAD.

Also, replacing Pressure Controller is very easy. If I knew that was the faulty part I would’ve done it by myself and it would cost around $100 CAD instead.
Here is the DIY link:
http://www.n54tech.com/forums/showthread.php?t=25223

I’ll probably replace the other one by myself.

Hope this helps to others.

Nick4724 · 02-23-2020, 10:26 AM

Quote:

Originally Posted by secrethero

UPDATE: I am burning slightly more gas too.

Quote:

Originally Posted by secrethero

UPDATE: I am burning slightly more gas too.

Did you ever fix this? Looks like mine is doing the exact same, over boosting and using too much fuel causing a sooty exhaust

clegg · 02-25-2020, 10:07 AM

The post #25 previous to your post , states that he had the boost solenoid replaced.

10-02-2015, 11:19 AM	#23
FL335 Banned 85 Rep 707 Posts Drives: 2009 335i Join Date: Oct 2013 Location: Florida Beaches iTrader: (0)	Vanos Solenoids. I get the 3100 and the other 29XX code. I am in need if new ones as I already pulled them out, cleaned and swapped them. My guess is this is the problem.
	Appreciate 0 Quote

02-25-2020, 10:07 AM	#27
clegg First Lieutenant 87 Rep 301 Posts Drives: 335i E92, 435i F32,X5 F15 Join Date: Apr 2019 Location: O'Fallon, MO iTrader: (0)	The post #25 previous to your post , states that he had the boost solenoid replaced.
	Appreciate 0 Quote

10-23-2015, 06:24 PM	#25
secrethero New Member 15 Rep 22 Posts Drives: 2008 335XI Join Date: Sep 2015 Location: Canada iTrader: (0)	I took the car to another mechanic that is specialized in German cars. He was able to reproduce the problem easily. Checked vacuum lines, wastegate, hoses and found that one of the (front) Pressure Controller/Boost Solenoid (aka Wategate Solenoid) was the rootcause of this problem. Replaced the part and it’s all good. According to BMW both needs to be changed but we only changed the bad one. I am looking at the old/bad Pressure Controller and part number is 11747548706 OEM Brand by Pierburg. According to invoice new part number is 11747626350. I can’t tell what the brand is but it cost $210 CAD. Same part (by Pierburg) at autopartsway.ca is $98 CAD. http://www.autopartsway.ca/partdetai.../pagenum1/tabs Not sure which one the mechanic is installed but cost more than twice. Total cost = part + labor + diagnostics = around $500 CAD. Also, replacing Pressure Controller is very easy. If I knew that was the faulty part I would’ve done it by myself and it would cost around $100 CAD instead. Here is the DIY link: http://www.n54tech.com/forums/showthread.php?t=25223 I’ll probably replace the other one by myself. Hope this helps to others.
	Appreciate 0 Quote