Wastegate Actuator Failure w/ JB4? HELP!

GatorF30 · 12-09-2017, 10:23 PM

My car was running like crap for a while, turns out my Flex Fuel sensor wiring on my JB4 was bad so I replaced that. I'm no longer getting any codes about the fuel pressure sensor reading being too low. But now I'm getting a drivetrain malfunction for the following when I read the codes on the JB4:

123431 electric wastegate, stop learning: stop position (wastegate open) outside tolerance
123401 Wastegate Learning Stop During *** Heading Cycle
123432 electric wastegate, stop learning: stop position (wastegate closed) outside toleran
120408 Reduced power mode

Is this a settings issue or hardware (wastegate actuator failure)?

I noticed my DWP is set to 0, FF/Wastegate Adaption is at 142, PID is at 12

Also, under the "WMI" section in the JB4 app, none of the bits under Ethanol Setup are set to on.

Are these all things that need to be corrected? There is about an E30 mixture in the car now.

Krelle · 12-09-2017, 11:18 PM

[QUOTE=GatorF30;22520037]My

Suggest you dismantle the JB4 to be sure this isn't causing the problem.

Is the turbo building pressure, starting the build up at the same rpm as usual?

Is there no pressure build up at all? Then the waste is stuck in open.

Please check above.

Mike@N54Tuning.com · 12-10-2017, 06:46 AM

Post the JB4 log, it shows the wastegate activity.

Mike

Kevins_1323 · 06-13-2023, 02:00 PM

What was the resolution?

I'm getting the same codes after JB4 EWG upgrade.

Long story:
Had an older JB4 on EWG car. Upgraded to EWG (new board+new wire) and now I'm getting the same exact code/errors. All connections feel solid.
Figured I would ask what this guy's issue/resolution was.
Or do I send logs in as well?

Thanks,
Kevin

(2014 F32 435i xDrive | JB4 & foot to the floor )

n55david · 06-13-2023, 05:57 PM

Quote:

Originally Posted by Kevins_1323

What was the resolution?

I'm getting the same codes after JB4 EWG upgrade.

Long story:
Had an older JB4 on EWG car. Upgraded to EWG (new board+new wire) and now I'm getting the same exact code/errors. All connections feel solid.
Figured I would ask what this guy's issue/resolution was.
Or do I send logs in as well?

Thanks,
Kevin

(2014 F32 435i xDrive | JB4 & foot to the floor )

Throwing the jb4 in the trash and going with a proper tune...

terryd5150 · 06-15-2023, 06:35 AM

Remove the JB4.

After that's done, do the symptoms repeat?

Also, I think you mentioned FF wires, but there's also a set of wires that you have to buy separately to connect the JB4 directly to the EWG.

Do you have those too?

12-09-2017, 10:23 PM	#1
GatorF30 Lieutenant 397 Rep 420 Posts Drives: EBII F30 Join Date: Nov 2016 Location: Florida iTrader: (3)	Wastegate Actuator Failure w/ JB4? HELP! My car was running like crap for a while, turns out my Flex Fuel sensor wiring on my JB4 was bad so I replaced that. I'm no longer getting any codes about the fuel pressure sensor reading being too low. But now I'm getting a drivetrain malfunction for the following when I read the codes on the JB4: 123431 electric wastegate, stop learning: stop position (wastegate open) outside tolerance 123401 Wastegate Learning Stop During *** Heading Cycle 123432 electric wastegate, stop learning: stop position (wastegate closed) outside toleran 120408 Reduced power mode Is this a settings issue or hardware (wastegate actuator failure)? I noticed my DWP is set to 0, FF/Wastegate Adaption is at 142, PID is at 12 Also, under the "WMI" section in the JB4 app, none of the bits under Ethanol Setup are set to on. Are these all things that need to be corrected? There is about an E30 mixture in the car now.
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12-09-2017, 11:18 PM	#2
Krelle Captain 90 Rep 648 Posts Drives: M2C Join Date: Jun 2013 Location: Denmark iTrader: (0)	[QUOTE=GatorF30;22520037]My Suggest you dismantle the JB4 to be sure this isn't causing the problem. Is the turbo building pressure, starting the build up at the same rpm as usual? Is there no pressure build up at all? Then the waste is stuck in open. Please check above. __________________ Ist der Motor kalt, Gib ihn sechs ein halb.....
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12-10-2017, 06:46 AM	#3
Mike@N54Tuning.com BimmerPost Supporting Vendor 4927 Rep 116,037 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Post the JB4 log, it shows the wastegate activity. Mike
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06-13-2023, 02:00 PM	#4
Kevins_1323 Registered 0 Rep 3 Posts Drives: 2014 435i Xdrive Join Date: Jun 2019 Location: Spokane WA iTrader: (0)	What was the fix ? What was the resolution? I'm getting the same codes after JB4 EWG upgrade. Long story: Had an older JB4 on EWG car. Upgraded to EWG (new board+new wire) and now I'm getting the same exact code/errors. All connections feel solid. Figured I would ask what this guy's issue/resolution was. Or do I send logs in as well? Thanks, Kevin (2014 F32 435i xDrive \| JB4 & foot to the floor )
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06-15-2023, 06:35 AM	#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)	Remove the JB4. After that's done, do the symptoms repeat? Also, I think you mentioned FF wires, but there's also a set of wires that you have to buy separately to connect the JB4 directly to the EWG. Do you have those too? Last edited by terryd5150; 06-15-2023 at 07:04 AM..
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