HELP - Retrofit SYNC 1 to SYNC 3 - DTC U2101: Control Module Configuration Incompatible

Ford SYNC 3 Support CyanLabs Update Support
, , , , , ,
1

Hi everyone,

I have recently retrofitted my Ford Focus MK3 2015 hatchback from SYNC 1 to SYNC 3. After programming with FORScan, I am getting a persistent DTC in the APIM module:
Code: U2101 - Control Module Configuration Incompatible
Status (-0B):

  • DTC Present at Time of Request
  • Malfunction Indicator Lamp is Off for this DTC

The screen and basic functions seem to work, but this configuration error remains. I suspect there is a mismatch in my APIM As-Built blocks or a conflict with the central configuration (BCM).

I have attached my APIM As-Built configuration file (.abt) and the log below. Could anyone please help me look into the As-Built code to see what is causing this incompatibility?

Thank you in advance!

VIN: RL05DF6AMFJR09225
Mô hình APIM: 4U5T-14G371-FDE
Loại APIM: Navigation
Kích thước APIM: 32GB
Dung lượng trống APIM: 19G
Phiên bản 3.4.26057 (NU5T-14G381-AE)

5/26/2026 3:26:32 PM +00:00

Partition Type = Free / Total
/fs/sd/MAP/ = 648K / 1.3G
/fs/Nuance/ = 7.0M / 1.7G
/fs/Nuance/grace = 63M / 1.4G
/fs/rwdata/ = 971M / 1.2G
/fs/rwdata/quip/ = 35M / 35M
/fs/rwdata/quip/ = 90M / 90M
/fs/mp/ = 84M / 1.4G
/fs/mp/resources = 332K / 72M
/fs/images/ = 19G / 25G

Installed Packages
1U5T-14G658-AH
4U5T-14G421-FEL
4U5T-14G423-FC
5U5T-14G391-FT
4U5T-14G424-FEL

APIM AsBuilt
DE00: 0B68659A10040C190004
DE01: 564D0B060003082000000000
DE02: 024D390000
DE03: 01000000000005
DE04: 17FE17FE3185
DE05: 80
DE06: 16013300000000167600005656880081

SYNC Region: ROW

Navigation Variant: Nav

Manufacturer Year: Pre MY20

Install Type: Retrofit

Old SYNC Version: 3.4.19200

New SYNC Version: 3.4.26057

Do you have a error message, if so what is it?
APIM Error Code: U2101 - Control Module Configuration Incompatible

Update Method: CyanLabs Syn3 Updater

Syn3 Updater Version: 2.14.2.0

Syn3 Updater Documentation Read: yes

Syn3 Updater Log File

CYANLABS - SYN3 UPDATER - V2.14.2.0
Branch: Stable
Operating System: Microsoft Windows 11 Pro (2009)

PREVIOUS CONFIGURATION
Version: 3.4.19200
Region: ROW
Navigation: True
Install Mode: Tự động dò (autoinstall)
Install Mode Overridden: False
My20 Protection Enabled: Cho phép

DESTINATION DETAILS
Mode: Drive
Model: KIOXIA TransMemory USB Device
Size: 57.7GB
FileSystem: exFAT
Partition Type: MBR

AUTOINSTALL.LST
; CyanLabs Syn3Updater 2.14.2.0 Stable - Autoinstall Mode - Sync 3.4.23188 ROW

[SYNCGen3.0_ALL_PRODUCT]
Item1 = RWDataCleaner TOOL - PU5T-14G386-BB_1690840002000.TAR.GZ
Open1= SyncMyRide\PU5T-14G386-BB_1690840002000.TAR.GZ
Item2 = VOICE - 5U5T-14G391-FT_1660787787000.TAR.GZ
Open2 = SyncMyRide\5U5T-14G391-FT_1660787787000.TAR.GZ
Item3 = GRACENOTES - 4U5T-14G423-FC_1615431949000.TAR.GZ
Open3 = SyncMyRide\4U5T-14G423-FC_1615431949000.TAR.GZ
Item4 = ENH_DAB - 1U5T-14G658-AH_1644006443000.TAR.GZ
Open4 = SyncMyRide\1U5T-14G658-AH_1644006443000.TAR.GZ
Item5 = APPS - NU5T-14G381-AE_1778770590000.TAR.GZ
Open5 = SyncMyRide\NU5T-14G381-AE_1778770590000.TAR.GZ
Options = AutoInstall


FILES (5)
PU5T-14G386-BB_1690840002000.TAR.GZ (3.2KB)
5U5T-14G391-FT_1660787787000.TAR.GZ (1.4GB)
4U5T-14G423-FC_1615431949000.TAR.GZ (923.8MB)
1U5T-14G658-AH_1644006443000.TAR.GZ (57.5MB)
NU5T-14G381-AE_1778770590000.TAR.GZ (869.9MB)

LOG
[5/23/2026 9:31:43 AM] Selected Region: ROW - Release: Sync 3.4.23188 - Map Version: Giữ bản đồ hiện có 
[5/23/2026 9:31:43 AM] Install Mode: Tự động dò (autoinstall) Forced: False 
[5/23/2026 9:31:43 AM] MY20 Protection: Cho phép 
[5/23/2026 9:31:43 AM] Formatting USB drive
[5/23/2026 9:31:43 AM] Re-creating partition table as MBR and formatting as ExFat on selected USB drive
[5/23/2026 9:31:52 AM] Checking Existing File: PU5T-14G386-BB_1690840002000.TAR.GZ 
[5/23/2026 9:31:52 AM] Validated: PU5T-14G386-BB_1690840002000.TAR.GZ (Skipping Download) 
[5/23/2026 9:31:52 AM] Checking Existing File: 5U5T-14G391-FT_1660787787000.TAR.GZ 
[5/23/2026 9:31:56 AM] Validated: 5U5T-14G391-FT_1660787787000.TAR.GZ (Skipping Download) 
[5/23/2026 9:31:56 AM] Checking Existing File: 4U5T-14G423-FC_1615431949000.TAR.GZ 
[5/23/2026 9:31:59 AM] Validated: 4U5T-14G423-FC_1615431949000.TAR.GZ (Skipping Download) 
[5/23/2026 9:31:59 AM] Checking Existing File: 1U5T-14G658-AH_1644006443000.TAR.GZ 
[5/23/2026 9:31:59 AM] Validated: 1U5T-14G658-AH_1644006443000.TAR.GZ (Skipping Download) 
[5/23/2026 9:31:59 AM] Checking Existing File: NU5T-14G381-AE_1778770590000.TAR.GZ 
[5/23/2026 9:32:02 AM] Validated: NU5T-14G381-AE_1778770590000.TAR.GZ (Skipping Download) 
[5/23/2026 9:32:02 AM] Preparing USB drive
[5/23/2026 9:32:02 AM] Checking Existing File: PU5T-14G386-BB_1690840002000.TAR.GZ 
[5/23/2026 9:32:02 AM] Copying: PU5T-14G386-BB_1690840002000.TAR.GZ 
[5/23/2026 9:32:02 AM] Validating: PU5T-14G386-BB_1690840002000.TAR.GZ 
[5/23/2026 9:32:02 AM] Copied: PU5T-14G386-BB_1690840002000.TAR.GZ 
[5/23/2026 9:32:02 AM] Checking Existing File: 5U5T-14G391-FT_1660787787000.TAR.GZ 
[5/23/2026 9:32:02 AM] Copying: 5U5T-14G391-FT_1660787787000.TAR.GZ 
[5/23/2026 9:34:57 AM] Validating: 5U5T-14G391-FT_1660787787000.TAR.GZ 
[5/23/2026 9:35:01 AM] Copied: 5U5T-14G391-FT_1660787787000.TAR.GZ 
[5/23/2026 9:35:01 AM] Checking Existing File: 4U5T-14G423-FC_1615431949000.TAR.GZ 
[5/23/2026 9:35:01 AM] Copying: 4U5T-14G423-FC_1615431949000.TAR.GZ 
[5/23/2026 9:36:57 AM] Validating: 4U5T-14G423-FC_1615431949000.TAR.GZ 
[5/23/2026 9:37:01 AM] Copied: 4U5T-14G423-FC_1615431949000.TAR.GZ 
[5/23/2026 9:37:01 AM] Checking Existing File: 1U5T-14G658-AH_1644006443000.TAR.GZ 
[5/23/2026 9:37:01 AM] Copying: 1U5T-14G658-AH_1644006443000.TAR.GZ 
[5/23/2026 9:37:07 AM] Validating: 1U5T-14G658-AH_1644006443000.TAR.GZ 
[5/23/2026 9:37:07 AM] Copied: 1U5T-14G658-AH_1644006443000.TAR.GZ 
[5/23/2026 9:37:07 AM] Checking Existing File: NU5T-14G381-AE_1778770590000.TAR.GZ 
[5/23/2026 9:37:07 AM] Copying: NU5T-14G381-AE_1778770590000.TAR.GZ 
[5/23/2026 9:38:58 AM] Validating: NU5T-14G381-AE_1778770590000.TAR.GZ 
[5/23/2026 9:39:03 AM] Copied: NU5T-14G381-AE_1778770590000.TAR.GZ 
[5/23/2026 9:39:03 AM] Generating Autoinstall.lst
[5/23/2026 9:39:03 AM] ALL FILES DOWNLOADED AND COPIED TO THE USB DRIVE SUCCESSFULLY!
2

This is a common error that has no effect on the APIM’s performance.

Rewriting the complete AB will sometimes fix this or temporarily make it go away.

3

Update: Thanks to everyone’s help, the U2101 error is now completely resolved!

However, I am facing a new display issue with the Active Park Assist (APA) on my SYNC 3.

My vehicle setup:

  • Ford Focus Hatchback Mk3

  • 9-sensor layout (6 front sensors, 3 rear sensors)

  • Parallel Park Assist ONLY

  • No DTCs in the APIM.

The issue: When I press the APA button, the system works perfectly in the background (it searches, the cluster chimes, and it steers the car into the spot). But, the SYNC 3 screen does not show the “Park Slot Found” visual interface or any APA graphics. It just stays on the regular screen/camera view.

On my old SYNC 1, the parking graphics displayed normally.

Has anyone experienced this missing visual with the 9-sensor configuration? How can I get the SYNC 3 screen to display the APA UI properly?

Thank you!

4

You need to tell the systems you replaced the Sync 1 with Sync 3 with the touchscreen display.

Look at your FCIM asbuilt and identify a setting for the touchscreen display, this needs to be enabled. This might be this setting for your vehicle:

5

Thank you for your help. Unfortunately, forscan configuration and programming does not show as-built for the FCIM module. What can I do in this case?

6

Then you have an older version asbuilt. PM me your VIN and I will investigate what you need to change.

7

Based on your VIN you have no FCIM.

Vehicle Make: Ford
Vehicle Model: Ford Focus Hatchback III
Vehicle Year: 2015
Vehicle Region: ROW

This is an older C1CMA vehicle, must be a base version. Sync 3 is not compatible with this vehicle, lots of limitations, and will not support the APA display natively.

This is the vehicle OEM asbuilt…

7D0-01-01 119F 0840 02D3
7D0-01-02 4000 001A
7D0-02-01 0456 4D00 0081
7D0-02-02 00DB
7D0-03-01 0000 0000 00DB
720-35-01 FBFF F707 55
726-01-01 B100 810C AA17
726-01-02 001E 0914 0974
726-01-03 013C 0100 F564
726-01-04 0102 0102 3C74
726-01-05 1B00 000B 0B64
726-01-06 0000 0000 0034
726-01-07 0000 0000 0035
726-01-08 0000 0000 0036
726-01-09 0000 0000 0037
726-01-10 0000 0000 003E

That’s it. A BCM, IPC, and Sync 1. I do not think this vehicle can support these features with Sync 3…unless
Since you do not have an HS3-CAN network, you might try enabling the I-CAN it not already active. This is in Sync 3 asbuilt. If that does not work, then there are likely no adjustments you can make.

8

Yes, I understand that, I’m trying to make it fully functional rather than perfectly compatible. Today I discovered that after editing and writing as-built using Forscan, the value doesn’t seem to be recorded by the APIM. In Forscan 7D0-02-02: PDC architecture xxxx-NNxx-xxcc I recorded the value corresponding to C1MCA Architecture, but when entering APIM’s test mode it shows PDC architecture as CGEA 1.3 Architect. Could the problem be with the APA due to this conflict? How can the APIM correctly recognize the installed value?

9

A focus never got CEGA 1.3, It only got CGEA 1.2 until 2018.

10

The asbuilt in test mode is the low level factory defaults in the Sync software, they do not change and really mean nothing unless you are mapping Sync software for features. Do not use these values to judge the settings of the APIM.