N54Tech.com - Your Source for International Turbo BMW Racing Discussion
(#1)
Old
MPJajunkis MPJajunkis is offline
New Member
 
Posts: 9
Join Date: Mar 2017
Car: 2011 550i M Sport
Default N63 JB4 Drivetrain Malfunction 121101 No description found - 05-11-2018, 01:35 PM

attached photo of error

I replaced spark plugs with NGK 97506 gap .02
Haven't got a misfire since but full throttle is still throwing 2 codes consistently

121101 No description found
120408 Reduced Power Mode

haven't been able to find much info on the codes.

I was thinking of uninstalling the JB4 and seeing if that the issue is related to it.

Any thoughts?
Attached Images
 
Reply With Quote
(#2)
Old
MPJajunkis MPJajunkis is offline
New Member
 
Posts: 9
Join Date: Mar 2017
Car: 2011 550i M Sport
Default 05-11-2018, 01:38 PM

121101 No description found
120408 Reduced Power Mode

happening even on Map 0
Reply With Quote
(#3)
Old
Payam @ BMS's Avatar
Payam @ BMS Payam @ BMS is offline
Super Moderator
 
Posts: 2,646
Join Date: Oct 2013
Car: e90 335i
Default 05-11-2018, 02:08 PM

Do you have F series enabled in your settings, that will help with determining the codes.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
Reply With Quote
(#4)
Old
MPJajunkis MPJajunkis is offline
New Member
 
Posts: 9
Join Date: Mar 2017
Car: 2011 550i M Sport
Default 05-25-2018, 11:14 PM

F series was already enabled.

I ended up uninstalling the JB4 but still was getting the drivetrain error and going into limp mode at full throttle. (Limp mode went away after turning the car off and on)

Afterward I went to a shop and had the DME fully cleared. Then I drove the car for the rest of the day without any errors ( Made quite a few WOT pulls). By the end of the day im thinking the car is fine.

The next day about a block from the house at about 15mph the error triggered again but now when i turn the car off and back on the Drivetrain error comes right back goes into limp mode after a few seconds.

Ran a scan here are the results.....
Attached Images
 

Last edited by MPJajunkis; 05-25-2018 at 11:19 PM..
Reply With Quote
(#5)
Old
MPJajunkis MPJajunkis is offline
New Member
 
Posts: 9
Join Date: Mar 2017
Car: 2011 550i M Sport
Default 05-25-2018, 11:18 PM

I had got a misfire error once before and then i changed my spark plugs to NGK97506 .020 and haven't seen them since.

"This screenshot was taken prior to upgrading the plugs"

Thinking it's probably a bad coil or possibly injectors? I'm Going to trying new coils first.. Is there a recommended coil for a n63 with jb4 or should I just go OEM?
Attached Images
 

Last edited by MPJajunkis; 05-26-2018 at 12:14 PM..
Reply With Quote
(#6)
Old
MPJajunkis MPJajunkis is offline
New Member
 
Posts: 9
Join Date: Mar 2017
Car: 2011 550i M Sport
Default 05-26-2018, 09:36 PM

Update... Friend came over and ran some diagnostics today. Looks like i have a bad injector on Cylinder 5 and a bad coil on 1
Reply With Quote
(#7)
Old
Payam @ BMS's Avatar
Payam @ BMS Payam @ BMS is offline
Super Moderator
 
Posts: 2,646
Join Date: Oct 2013
Car: e90 335i
Default 05-29-2018, 01:42 PM

Yes, sounds like injector/coil issue. Customer had these symptoms as well and fixed with both.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
Reply With Quote
(#8)
Old
MPJajunkis MPJajunkis is offline
New Member
 
Posts: 9
Join Date: Mar 2017
Car: 2011 550i M Sport
Default 06-13-2018, 07:35 PM

After changing the bad injector and coil. I'm still getting the same exact error on full throttle but less frequently ..
121101 (no description found)
120408 (reduce power mode).. thoughts?
Reply With Quote
(#9)
Old
MPJajunkis MPJajunkis is offline
New Member
 
Posts: 9
Join Date: Mar 2017
Car: 2011 550i M Sport
Default 06-13-2018, 07:36 PM

I can't find any info on error 121101
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump




vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2017, N54tech.com