Is there a way to bench test the stock wastegate actuator?

Aaron@Autosource · 04-02-2019, 08:43 PM

Asking because I'm trying to diagnose these 2 codes:

123701 - Electric Wastegate, Position Sensor, Electrical: Short Circuit to B+

120408 - Charging pressure control, Deactivation, Pressure Build Up Blocked

Basically trying to narrow down if it's the wastegate actuator itself or the DME(like BMS's JB4 Map sensor ground fault).

Any help would be appreciated, thanks!

mike@x-ph.com · 04-03-2019, 12:30 AM

If you're local to one of the aftermarket turbo companies you might be able to get them to test it.

bmrdev · 01-27-2021, 10:06 PM

Quote:

Originally Posted by Aaron@Autosource

Asking because I'm trying to diagnose these 2 codes:

123701 - Electric Wastegate, Position Sensor, Electrical: Short Circuit to B+

120408 - Charging pressure control, Deactivation, Pressure Build Up Blocked

Basically trying to narrow down if it's the wastegate actuator itself or the DME(like BMS's JB4 Map sensor ground fault).

Any help would be appreciated, thanks!

Did you get this fixed? If so, you mind sharing your fix?

sorin27 · 03-22-2022, 09:31 AM

Quote:

Originally Posted by Aaron@Autosource

Asking because I'm trying to diagnose these 2 codes:

123701 - Electric Wastegate, Position Sensor, Electrical: Short Circuit to B+

120408 - Charging pressure control, Deactivation, Pressure Build Up Blocked

Basically trying to narrow down if it's the wastegate actuator itself or the DME(like BMS's JB4 Map sensor ground fault).

Any help would be appreciated, thanks!

Hi there, did you get this fixed? What was causing this issue?

n55david · 03-22-2022, 10:54 AM

Quote:

Originally Posted by bmrdev

Did you get this fixed? If so, you mind sharing your fix?

Quote:

Originally Posted by sorin27

Hi there, did you get this fixed? What was causing this issue?

Seeing as how this was a 4yo post in the "n55 engine" forum, you both have different setups and the original poster hasnt been active in almost 2 years.... Im gonna say fail

terryd5150 · 03-22-2022, 06:58 PM

I once responded to a seven-year old "for sale" thread on e90post.

I bought the item (custom interior trim).

These guys are just looking for help on a problem; the forums are great potential archives for that information.

To those looking for help: have you looked at used turbos for your model on eBay?

On an N55, a new EWG is like $500-$600; however, you can find the complete used turbo (EWG included) on eBay for $300-$400.

Maybe that's a start?

n55david · 03-23-2022, 10:28 AM

Quote:

Originally Posted by terryd5150

I once responded to a seven-year old "for sale" thread on e90post.

I bought the item (custom interior trim).

These guys are just looking for help on a problem; the forums are great potential archives for that information.

To those looking for help: have you looked at used turbos for your model on eBay?

On an N55, a new EWG is like $500-$600; however, you can find the complete used turbo (EWG included) on eBay for $300-$400.

Maybe that's a start?

Don't point out how horrible and unhelpful I can be.

04-02-2019, 08:43 PM	#1
Aaron@Autosource 98 Rep 305 Posts Drives: F110/F22 Join Date: Aug 2012 Location: Socal iTrader: (2)	Is there a way to bench test the stock wastegate actuator? Asking because I'm trying to diagnose these 2 codes: 123701 - Electric Wastegate, Position Sensor, Electrical: Short Circuit to B+ 120408 - Charging pressure control, Deactivation, Pressure Build Up Blocked Basically trying to narrow down if it's the wastegate actuator itself or the DME(like BMS's JB4 Map sensor ground fault). Any help would be appreciated, thanks!
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04-03-2019, 12:30 AM	#2
mike@x-ph.com BimmerPost Supporting Vendor 24186 Rep 190,777 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	If you're local to one of the aftermarket turbo companies you might be able to get them to test it. __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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03-22-2022, 06:58 PM	#6
terryd5150 Head Fry Cook at McBurgertown 507 Rep 1,005 Posts Drives: 2015 435i M-Sport 6MT Join Date: May 2015 Location: Greenville, SC iTrader: (9)	I once responded to a seven-year old "for sale" thread on e90post. I bought the item (custom interior trim). These guys are just looking for help on a problem; the forums are great potential archives for that information. To those looking for help: have you looked at used turbos for your model on eBay? On an N55, a new EWG is like $500-$600; however, you can find the complete used turbo (EWG included) on eBay for $300-$400. Maybe that's a start?
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