Installed downpipes, now my turbos are off?

jordonallison · 03-28-2018, 12:51 AM

I installed downpipes on my car over the weekend and got the engine code below:

Drivetrain Malfunction: Drive Moderately

120408 charge pressure control, shutdown: pressure build-locked

Both of my turbos are now off, can you tell me what I might have done wrong? Wondering if this happened to anyone else..

I need my turbos back in my life haha.

AhsanU · 03-28-2018, 10:40 AM

Check the charge pipes. If they're cracked then that's one reason why there is no boost. Fairly easy and simple fix if that's the case as charge pipes are cheap and easy to install.

jordonallison · 03-28-2018, 11:45 PM

Quote:

Originally Posted by AhsanU

Check the charge pipes. If they're cracked then that's one reason why there is no boost. Fairly easy and simple fix if that's the case as charge pipes are cheap and easy to install.

Checking charge pipes now! See no cracks from above.. let's see below here in a few mins.

Lee808 · 03-28-2018, 11:58 PM

From the sounds of it, your charpipes either cracked or popped off. Be sure to check heat exchanger side too

jordonallison · 03-29-2018, 12:12 AM

Quote:

Originally Posted by Lee808

From the sounds of it, your charpipes either cracked or popped off. Be sure to check heat exchanger side too

Just took off the charge pipes, no issues there.. the mystery continues!

jordonallison · 03-30-2018, 01:19 PM

Update: dropping off my car at BMW.. let's see what dumb mistake I made during the install haha. Will update with findings.

Woodengun · 03-30-2018, 03:42 PM

Pinched/damaged wire controlling the actuators? Or damaged the actuators when installing DP?

jordonallison · 03-30-2018, 11:37 PM

Update: my dumbass put one of the downpipe clamps on wrong. HAHA.

fackamato · 04-01-2018, 07:55 PM

Quote:

Originally Posted by jordonallison

Update: my dumbass put one of the downpipe clamps on wrong. HAHA.

Glad to hear you got it sorted. What did BMW charge and what did they say about the DP's, if anything?

Warranty?

AhsanU · 04-01-2018, 11:33 PM

Quote:

Originally Posted by jordonallison

Update: my dumbass put one of the downpipe clamps on wrong. HAHA.

Yikes!

Glad you got it sorted but.. why take it to BMW? Hopefully your car didn't get flagged for mods.

ljzimm · 04-02-2018, 11:29 AM

Quote:

Originally Posted by jordonallison

Update: my dumbass put one of the downpipe clamps on wrong. HAHA.

Kudos for being accepting of that fact that we all make mistakes

hopefully no negative ramifications from the dealer seeing your mods?

keanoncars · 07-05-2018, 06:16 AM

Thank you for this post!

Made the same mistake. Rotated the V-clamps too far around the connection between downpipe and turbo, so that the bolt blocked the wastegate actuator arm from doing its test on ignition. And as a result of this - emergency program and no turbos.

Had the same error code as you.

Now the V-clamp is rotated back again and the turbos now spools as h**l and no emergency program... Happy days

jordonallison · 07-05-2018, 08:44 AM

Quote:

Originally Posted by keanoncars

Thank you for this post!

Made the same mistake. Rotated the V-clamps too far around the connection between downpipe and turbo, so that the bolt blocked the wastegate actuator arm from doing its test on ignition. And as a result of this - emergency program and no turbos.

Had the same error code as you.

Now the V-clamp is rotated back again and the turbos now spools as h**l and no emergency program... Happy days

Glad I was able to help!

chicken1 · 12-26-2020, 07:31 AM

Quote:

Originally Posted by jordonallison

Update: my dumbass put one of the downpipe clamps on wrong. HAHA.

Thanks for this thread it saved me from the same mistake 🤣

M4_papi215 · 12-31-2021, 05:30 PM

Quote:

Originally Posted by keanoncars

Thank you for this post!

Made the same mistake. Rotated the V-clamps too far around the connection between downpipe and turbo, so that the bolt blocked the wastegate actuator arm from doing its test on ignition. And as a result of this - emergency program and no turbos.

Had the same error code as you.

Now the V-clamp is rotated back again and the turbos now spools as h**l and no emergency program... Happy days

3 years later this post helped me, literally the same scenario, just installed vsrf downpipes, everything went smooth even the first test drive, but out of nowhere I got the drivetrain malfunction with the 120408 code, after reading this post I crawled back under there checked the clamps and sure enough one of them was blocking the wastegate arm from closing…. Moved it started the car, got my turbos back, life is good, thank you for posting, thank this forum!✊🏽

mike@x-ph.com · 01-01-2022, 10:44 AM

Quote:

Originally Posted by M4_papi215

3 years later this post helped me, literally the same scenario, just installed vsrf downpipes, everything went smooth even the first test drive, but out of nowhere I got the drivetrain malfunction with the 120408 code, after reading this post I crawled back under there checked the clamps and sure enough one of them was blocking the wastegate arm from closing…. Moved it started the car, got my turbos back, life is good, thank you for posting, thank this forum!✊🏽

bvrider1 · 01-01-2022, 06:22 PM

This is why I favor forums over Facebook.

Forums are like library. Glad you got it fixed!

Quote:

Originally Posted by M4_papi215

3 years later this post helped me, literally the same scenario, just installed vsrf downpipes, everything went smooth even the first test drive, but out of nowhere I got the drivetrain malfunction with the 120408 code, after reading this post I crawled back under there checked the clamps and sure enough one of them was blocking the wastegate arm from closing…. Moved it started the car, got my turbos back, life is good, thank you for posting, thank this forum!✊🏽

f834me · 04-16-2023, 07:56 AM

Quote:

Originally Posted by bvrider1

This is why I favor forums over Facebook.

Forums are like library. Glad you got it fixed!

Quote:

Originally Posted by M4_papi215

3 years later this post helped me, literally the same scenario, just installed vsrf downpipes, everything went smooth even the first test drive, but out of nowhere I got the drivetrain malfunction with the 120408 code, after reading this post I crawled back under there checked the clamps and sure enough one of them was blocking the wastegate arm from closing…. Moved it started the car, got my turbos back, life is good, thank you for posting, thank this forum!✊🏽

Amen

mike@x-ph.com · 04-16-2023, 11:56 AM

Quote:

Originally Posted by bvrider1

This is why I favor forums over Facebook.

Forums are like library. Glad you got it fixed!

Agree!

Kanto · 03-20-2024, 11:04 PM

I have the same drivetrain malfunction code
With these codes also showing in bootmod3

However i took mine to a shop to get installed and thought the tune would fix it.

Possible my wastegate is being blocked also?

Screenshot with more codes on it are before i cleared them

Screenshot with 2 codes are post clear

b_w. · 03-21-2024, 09:06 AM

Your wastegate is out of adjustment. Need to download ista and measure and calibrate.

mike@x-ph.com · 03-21-2024, 11:32 AM

Let us know if that fixes it

03-28-2018, 12:51 AM	#1
jordonallison Private 26 Rep 68 Posts Drives: F80 M3 6MT Join Date: Sep 2017 Location: Seattle, WA iTrader: (1)	Installed downpipes, now my turbos are off? I installed downpipes on my car over the weekend and got the engine code below: Drivetrain Malfunction: Drive Moderately 120408 charge pressure control, shutdown: pressure build-locked Both of my turbos are now off, can you tell me what I might have done wrong? Wondering if this happened to anyone else.. I need my turbos back in my life haha.
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03-28-2018, 10:40 AM	#2
AhsanU i can haz horsepowr ?? 3846 Rep 1,937 Posts Drives: inconspicuous white van Join Date: Jun 2012 Location: Westchester, N.Y. iTrader: (2)	Check the charge pipes. If they're cracked then that's one reason why there is no boost. Fairly easy and simple fix if that's the case as charge pipes are cheap and easy to install.
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03-28-2018, 11:58 PM	#4
Lee808 Out in the middle of the sea 231 Rep 471 Posts Drives: 2015 M4 Join Date: Jun 2016 Location: Ewa Beach, Hawaii iTrader: (0)	From the sounds of it, your charpipes either cracked or popped off. Be sure to check heat exchanger side too
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03-30-2018, 01:19 PM	#6
jordonallison Private 26 Rep 68 Posts Drives: F80 M3 6MT Join Date: Sep 2017 Location: Seattle, WA iTrader: (1)	Update: dropping off my car at BMW.. let's see what dumb mistake I made during the install haha. Will update with findings.
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03-30-2018, 03:42 PM	#7
Woodengun Lieutenant 310 Rep 408 Posts Drives: Yugo Join Date: Apr 2015 Location: Norcal iTrader: (0)	Pinched/damaged wire controlling the actuators? Or damaged the actuators when installing DP?
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03-30-2018, 11:37 PM	#8
jordonallison Private 26 Rep 68 Posts Drives: F80 M3 6MT Join Date: Sep 2017 Location: Seattle, WA iTrader: (1)	Update: my dumbass put one of the downpipe clamps on wrong. HAHA.
	Appreciate 3 ljzimm105.50 chicken19.00 JulesM6.50 Quote

07-05-2018, 06:16 AM	#12
keanoncars Enlisted Member 26 Rep 31 Posts Drives: Austin Yellow BMW M4 Join Date: Jan 2018 Location: Copenhagen iTrader: (0)	Thank you for this post! Made the same mistake. Rotated the V-clamps too far around the connection between downpipe and turbo, so that the bolt blocked the wastegate actuator arm from doing its test on ignition. And as a result of this - emergency program and no turbos. Had the same error code as you. Now the V-clamp is rotated back again and the turbos now spools as h**l and no emergency program... Happy days
	Appreciate 2 jordonallison25.50 TopJimmy5494.00 Quote

03-20-2024, 11:04 PM	#20
Kanto Enlisted Member 2 Rep 34 Posts Drives: 2015 M3 Join Date: Feb 2024 Location: Texas iTrader: (0) Garage List 2015 Bmw M3 [0.00]	I have the same drivetrain malfunction code With these codes also showing in bootmod3 However i took mine to a shop to get installed and thought the tune would fix it. Possible my wastegate is being blocked also? Screenshot with more codes on it are before i cleared them Screenshot with 2 codes are post clear Attached Images
	Appreciate 0 Quote

03-21-2024, 09:06 AM	#21
b_w. Lieutenant 416 Rep 545 Posts Drives: F80 M3 Join Date: Jul 2022 Location: Alberta iTrader: (0)	Your wastegate is out of adjustment. Need to download ista and measure and calibrate.
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03-21-2024, 11:32 AM	#22
mike@x-ph.com BimmerPost Supporting Vendor 24342 Rep 191,139 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Let us know if that fixes 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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