VCDS error code 1543

JRob84

Member
VIP Member
T6 Pro
Hi guys, I've recently got myself a VCDS and going through my error codes, I have had a look for this one but got no joy on what I can do or what it is.
Any help gratefully appreciated.

Forgive me if I ask any silly questions as this is all new to me but very willing to learn.



1543 - Control Module Incorrectly Coded
U1014 00 [00001001] - -
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 4
Fault Frequency: 1
Reset counter: 148
Mileage: 313576 km
Date: 2024.03.31
Time: 01:11:29

Voltage terminal 30: 12.2 V
Byte_Coding_Condition-byte_0_condition: OK
Byte_Coding_Condition-byte_1_condition: OK
Byte_Coding_Condition-byte_10_condition: ERROR
Byte_Coding_Condition-byte_11_condition: ERROR
Byte_Coding_Condition-byte_12_condition: ERROR
Byte_Coding_Condition-byte_13_condition: ERROR
Byte_Coding_Condition-byte_14_condition: ERROR
Byte_Coding_Condition-byte_15_condition: ERROR
Byte_Coding_Condition-byte_16_condition: ERROR
Byte_Coding_Condition-byte_17_condition: ERROR
Byte_Coding_Condition-byte_18_condition: ERROR
Byte_Coding_Condition-byte_19_condition: ERROR
Byte_Coding_Condition-byte_2_condition: OK
Byte_Coding_Condition-byte_20_condition: ERROR
Byte_Coding_Condition-byte_21_condition: ERROR
Byte_Coding_Condition-byte_22_condition: ERROR
Byte_Coding_Condition-byte_23_condition: ERROR
Byte_Coding_Condition-byte_24_condition: ERROR
Byte_Coding_Condition-byte_25_condition: ERROR
Byte_Coding_Condition-byte_26_condition: ERROR
Byte_Coding_Condition-byte_27_condition: ERROR
Byte_Coding_Condition-byte_3_condition: OK
Byte_Coding_Condition-byte_4_condition: OK
Byte_Coding_Condition-byte_5_condition: OK
Byte_Coding_Condition-byte_6_condition: OK
Byte_Coding_Condition-byte_7_condition: OK
Byte_Coding_Condition-byte_8_condition: ERROR
Byte_Coding_Condition-byte_9_condition: OK
 
It's always a good idea to post full unedited VCDS Auto-Scan so that can be seen how the vehicle is configured as the controllers do communicate with each others - and usually need to be coded respectively.

The fault code alone - especially "Control Module Incorrectly Coded" - doesn't tell much without knowing which controller it is and what's the coding which is incorrect.
 
And I will also say ‘if it ain’t broke ……’
It’s always worth investigating faults and understanding what’s causing them etc etc but don’t get fixated on trying to resolve every last little thing, I always say do a scan, reset all the codes take it for a spin and see what, if any, come back then re-evaluate and decide on a course of action, too easy to go down a rabbit hole looking at fault codes

I have scanned a LOT of vans and I can count on one hand how many times I scanned a van that didn’t have fault codes stored
 
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