01044 - CONTROL MODULE INCORRECTLY CODED

CONTROL MODULE INCORRECTLY CODED

Since 1994 auto repairs has drastically changed, so much so that most cars cannot be repaired  without a diagnostic code tester. It is therefore advantages to invest in one of the hand held free standing devices or cable interfaces that plugs into a USB port of a laptop computer running the appropriate software to do the necessary. The best software to date for Vag cars is undoubtedly VCDS from Ross Tech. Their latest version is version 14. The software is absolutely free but the interface cable comes at a cost. It is a bit pricy but its a worthwhile investment since it entitles you to free updates for life. This interface cable has a built in PAL chip which doubles-up as a dongle containing the cable activation code. Even though there are several out-band 3rd party interface cables available on the market, none of them gives you the confidence that a VCDS HEX-CAN automotive diagnostic device, that is backed by a service company ready to help with any automotive queries, gives you. Bare in mind that this software has the ability to change the behaviour of the electronic control systems built into your car which can result resulting in catastrophic effects if not performed correctly. If you lack the competence or confidence to perform these operations, or even if you are unfamiliar with or the software, I urge you to refrain from changing anything and obtain an experts advice or assistance. Write down or print out all codes and settings so that it is easy to revert back to them.

Below are just a few of the faults that have popped-up on various vag cars over the past few years. Since the codes cover all Vag cars, the code "01044 - Control Module Incorrectly Coded" has occurred several thousand times in all makes and models of Vag cars, in all languages and countries throughout the world.

01044 - CONTROL MODULE INCORRECTLY CODED

01044 - Modul de comanda: codare incorecta
        35-00 -  -

01044 - Steuergerät falsch codiert
        35-00 -  -

01044 - Módulo de control codificadas incorrectamente
        35-00 -  -

01044 - Modul za kontrol Nepravilno Kodiran
        35-00 -  -

01044 - module de commande codées correctement
        35-00 -  -

01044 - Control Module ongecodeerde
        35-00 -  -

01044 - Beheer Module Verkeerd Gekodeerde
        35-00 -  -

01044 - Upravljački modul Pogrešno Coded
        35-00 -  -

01044 - Control Module Nepareizi Coded
        35-00 -  -

01044 - 控制模塊編碼不正確
        35-00 -  -

01044 - Kòngzhì mókuài biānmǎ bù zhèngquè
        35-00 -  -

01044 - Modul de control codificate incorect
        35-00 -  -

01044 - Kontrolli Module kodifikua Gabimisht
        35-00 -  -

01044 - وحدة التحكم الأكواد بشكل غير صحيح
        35-00 -  -

01044 - Řídicí modul nesprávný kód
        35-00 -  -

01044 - Modul Kawalan Salah Dikodkan
        35-00 -  -

01044 - Kontrol Modülü hatalı Kodlu
        35-00 -  -

01044 - Control Module Felaktigt Kodad
        35-00 -  -

Genuine VCDS cable and Software from Ross Tech.

What I find most intriguing is that for most DTC codes, VW offers some sort of help by using words like "intermittent" " implausible" "short circuit" "limit exceeded", etc.. like these faults below, but the 01044 faulty code featured above offers absolutely none. However, I have included some data below that may be of some help. Should you find these codes helpful, all I ask is for you to like my site on G+1 , Facebook, Twitter, Pinterest, etc.

00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent

01044 - Control Module Incorrectly Coded
35-00 -  -

01179 - Incorrect Key Programming
35-00 - -

01179 - Incorrect Key Programming
005 - No or Incorrect Basic Setting / Adaptation

00852 - Loudspeaker(s); Front
44-00 - Short Circuit

16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 35-00 -  -

01044 - Control Module Incorrectly Coded
35-00 - -

00933 - Electric Window Motor; Passenger Side (V148)
62-10 - No or Incorrect Adjustment - Intermittent

16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 002 - Lower Limit Exceeded

16825 - EVAP Emission Control Sys
P0441 - 35-10 - Incorrect Flow - Intermittent

00928 - Locking Module for Central Locking: Front Driver Side (F220)
27-00 - Implausible Signal

VW 9N CODES FOR:
CONTROL MODULE INCORRECTLY CODED

If  one of the following controllers is fitted in your car, try each of these codes individually  and you are guaranteed to solve your " Control Module incorrectly coded" problem, providing you have just changes the coding of one module or replaced only one module.  I need to stress as I have in a previous blog that every Control module that is fitted in your car has a prefered coding which is subject to the equipment it supervises. As such, its coding is stored as an onboard binary number, which in essence is the binary sum of the features for that specific module. Whereas the master ECU / Ctrl Head Dash  also stores an onboard binary number which in essence is the binary sum of all the Control Module's coding fitted in the car. This binary sum is called the checksum and any incorrectly coded  module will result in an erroneous checksum. If this is the case, the erroneous checksum is compared to a reference checksum also stored in the ECU module and any discrepancy could incapacitate your Volkswagen completely or present you with some peculiarities and error codes to match. Like the notorious 01044 control module incorrectly coded error. Checksum verification was adopted by BOSCH Motronic ECUs to validate its EPROM's stored data. So, it is wise not to change the coding or replace any control modules in your VW AUDI, SKODA or SEAT unless you are au fait with binary and hexadecimal number systems.

Address 09: Cent. Elect. [21343 login]
Component: 0009 BN-SG. 2S36

Controller: 6Q1 937 049 F
Coding: = 09870 / 09390 / 08332 / 25742 / 26030 /
26254 / 00004 / 09358 / 16396 / 08588 / 08204 /
00004 / 09646 / 24716 / 25743 / 24588 / 17422 /

Controller: 6Q1 937 049 D
Coding: = 00140 / 16524 / 09406 / 17422 / 25610 /
25614 / 25774 / 09358 / 25646 / 00012 / 01166 /
25774 / 25742 / 09870 / 09390 / 09646 /

Controller: 6Q1 937 049 C
Coding: = 09358 / 09390 / 00140 / 16396 / 25742 /
00012 / 25742 / 26046 / 25614 /

Controller: 6Q1 937 049 B
Coding: = 25754 / 09374 / 00140 / 17594 / 25758 /

Controller: 6Q1 937 049
Coding: = 00141 / 09234 / 09870 / 09362 / 09358 / 09394 / 09646 /

Address 09:  Cent. Elect.  [21343 login]
Component: 0000 BN-SG. 2S36
Address 09: Controller: 6Q1 937 049 F Coding: 09358
Address 09: Controller: 6Q1 937 049 F Coding: 25742
Address 09: Controller: 6Q1 937 049 F Coding: 25743

Address 09:  Cent. Elect.  [21343 login]
Component:  000B BN-SG. 2S36
Address 09: Controller: 6Q1 937 049 F Coding: 08588
Address 09: Controller: 6Q1 937 049 F Coding: 16524
Address 09: Controller: 6Q1 937 049 F Coding: 24716

NB! More component codes in the next blog ...

INSTRUMENT CLUSTER / IMMOBILIZER / KOMBI
6Q0 920 825

Component: KOMBIINSTRUMENT VDO V06
Address 17: Instruments Controller: 6Q0 920 825 E Coding: 01144

Component:  INSTRUMENT CLUSTER VDO V07
Address 17: Instruments Controller: 6Q0 920 825 E Coding: 01144

Component: KOMBIINSTRUMENT AGD V05
Address 17: Instruments Controller: 6Q0 920 825 F Coding: 01132

Component: KOMBIINSTRUMENT AGD V02
Address 17: Instruments Controller: 6Q0 920 825 F Coding: 01132

Component: KOMBIINSTRUMENT AGD V04
Address 17: Instruments Controller: 6Q0 920 825 F Coding: 01132

Component:  KOMBIINSTRUMENT VDO V06
Address 17: Instruments Controller: 6Q0 920 825 F Coding: 01132

Component: KOMBIINSTRUMENT VDO V03
Address 17: Instruments Controller: 6Q0 920 825 G Coding: 01132

Component: KOMBIINSTRUMENT VDO V06
Address 17: Instruments Controller: 6Q0 920 825 G Coding: 01132

COMPONENT KOMBIINSTRUMENT VDO V06
Address 17: Instruments Controller: 6Q0 920 825 H Coding: 01141

Component: KOMBIINSTRUMENT VDO V06
Address 17:  Instruments Controller: 6Q0 920 825 J Coding: 01142

Component: KOMBIINSTRUMENT VDO V05
Address 17:  Instruments Controller: 6Q0 920 825 K Coding: 01148

Component:  KOMBIINSTRUMENT VDO V02
Address 17:  Instruments Controller: 6Q0 920 825 L Coding: 01148

CENTRAL CONVENIENCE

Address 46:
Controller:Central Conv.

06 Komfortgerát 0002 6Q0 959 433 C Coding: 00067
07 Komfortgerát 0002 6Q0 959 433 C Coding: 00259

63 Komfortgerát 0002 6Q0 959 433 E Coding: 00016
3  Komfortgerát 0002 6Q0 959 433 E Coding: 00016
5F Komfortgerát 0002 6Q0 959 433 E Coding: 00017
   Komfortgerát 0002 6Q0 959 433 E Coding: 00018
63 Komfortgerát 0002 6Q0 959 433 E Coding: 00016
64 Komfortgerát 0002 6Q0 959 433 E Coding: 00019
65 Komfortgerát 0002 6Q0 959 433 E Coding: 00018
67 Komfortgerát 0002 6Q0 959 433 E Coding: 00018
3F Komfortgerát 0002 6Q0 959 433 E Coding: 00018
3F Komfortgerát 0002 6Q0 959 433 E Coding: 00019
2F Komfortgerát 0002 6Q0 959 433 E Coding: 00064
4y Komfortgerát 0002 6Q0 959 433 E Coding: 00065
4z Komfortgerát 0002 6Q0 959 433 E Coding: 00065
6K Komfortgerát 0002 6Q0 959 433 E Coding: 00065
4U Komfortgerát 0002 6Q0 959 433 E Coding: 00066
4M Komfortgerát 0002 6Q0 959 433 E Coding: 00064
31 Komfortgerát 0002 6Q0 959 433 E Coding: 00067
4T Komfortgerát 0002 6Q0 959 433 E Coding: 00258

   Komfortgerát 0002 6Q0 959 433 F Coding: 00018
   Komfortgerát 0002 6Q0 959 433 Coding: 00021

J2 Komfortgerát 0002 6Q0 959 433 G Coding: 00064
20 Komfortgerát 0002 6Q0 959 433 G Coding: 00065
41 Komfortgerát 0002 6Q0 959 433 G Coding: 00017

1N Komfortgerát 0002 6Q0 959 433 H Coding: 00018
2Y Komfortgerát 0002 6Q0 959 433 H Coding: 00018
1N Komfortgerát 0002 6Q0 959 433 H Coding: 00019  
1R Komfortgerát 0002 6Q0 959 433 H Coding: 00067
0H Komfortgerát 0002 6Q0 959 433 H Coding: 00067

EPC LIGHT - REVISITED

VW POLO EPC LIGHT 

Most VW Polo, Golf, Audi, Passat and  Skoda  vehicles and probably every other VAG cars appears to have problems lately. In one sentence, the most common of these problems seems to be on obd diagnostics the culprit being the  wiring that interconnect all the electronic modules, aka the OBD II / CANbus. Virtually every car diagnostic test done on several different VAG cars produced the same faults. This implies that they are common, since they are recurring on different owners cars.  I can relate to this from my Television engineering days, when several same-make and same-model televisions all appeared to give the same problems. These VAG cars all seemed to have Intermittent / Implausible messages on the Data Bus and its highly unlikely that it could be the electronic modules themselves that are intermittent. Should this be the case, each and every one of these VAG cars then needs to be recalled because it looks like a defective design or assembly line problem.  But that's  wishfully thinking on my part which will obviously be met with and answer like - highly unlikely.

Wiring harnesses and cable assemblies for electrical buses interconnecting several MOSFET fast switching electronic modules each having an edge connector / plug whether it is gold plated or not, has parasitic capacitance. Add this  to the edge connector resistance and crimped wire contacts inside the plugs makes for interesting intermittent connections. The following list are faults /errors  that showed up on diagnostic tests on cars with EPC light problems, which  gives you some idea what I'm referring to. I've  abbreviated "Powertrain Data Bus" to PDB: in order to stop each fault from running onto two lines. Excessive comms errors and internal control module memory error intermittent are common faults caused by wiring harnesses.

SCAN TOOL ERROR CODES

1) 01312 - Powertrain Data Bus:  - Faulty

2) 18034 - PDB: error P1626 Missing Message from TCU  (Transmission Control Unit)
3) 18043 - PDB: error  P1635 Missing Message from A/C Controller
4) 18044 - PDB: error  P1636 Missing Message from Airbag Controller
5) 18058 - PDB: error  P1650 Missing Message from Instrument Cluster
6) 18270 - PDB: error  P1862 Missing Message from Instrument Cluster 

7) 18055 - PDB: error  P1647 Check Coding of ECUs
8) 18056 - PDB: error  P1648 Failure
9) 18045 - PDB: error  P1637 Missing Message from Electric Load Controller
A) 18097 - PDB: error  P1689 Implausible Message from Elect. Load Controller

B) 18104 - PDB: error  P1696 Implausible Message from Steering Column Controller
C) 18107 - PDB: error  P1699 Missing Message from Steering Wheel Electronics

D) 18057 - PDB: error  P1649 Missing Message from ABS Controller
E) 18259 - PDB: error  P1851 Missing Message from ABS Controller
F) 18090 - PDB: error  P1682 Implausible Message from ABS Controller
G) 18261 - PDB: error  P1853 Implausible Message from ABS Controller

Implausible signal means that it is "intermittent", even intermittent at the time the diagnostic tester was interfacing with the ECU's, TCU's, STC's ABS's, A/C etc... "Missing Message" implies absolutely no contact (Open Circuit) with the respective modules at the time of testing. Since VAG cars became inundated with electronic modules, our individual cars each have a few hundred more electrical connections than the previous generation of cars each and everyone of them subject to the tresses and strains of  the bumps on uneven roads and spirited driving. Add engine heat, steam, dampness and other weather conditions to this equation and suddenly these connections become tarnished over time. Tarnished connections are certainly not electrically sound and one way to clean these contacts is with contact spray but graphite or a grey ink rubber would be more effective to clean the tarnish off the gold plated PCB edge connectors. The Bentely VW manual suggest replacement of the whole wiring harness if  any problems arise but it comes at a cost of  $798.00 and that's for a 2007 VW Polo highline. I would hate to know what it would cost for a 2013 Volkswagen Touareg or 2013 Volkswagen Amrok not to mention 2013 Audi A8 or Audi TT .

VAG cars are really nippy and a joy to drive and I'm certain the bulk of VAG car owners enjoy spirited driving but many many VAG car driver probably regret this since they only experienced  EPC light troubles after they did some real spirited driving. I know this is absolutely true for Audi TT drivers who complained that their cars were fin until they gave it a nice workout. It is obvious centrifugal force, torque, tension, flexing, wind resistance and inertia plays their respective roles on the plugs and connectors. The EPC Light problems above, D through G appears to dictate that the ABS Controller is faulty or its edge connector / plug is faulty or the harness is faulty. B through C suggest that the Steering Wheel Controller is faulty or its edge connector / plug is faulty or the harness is faulty is causing the EPC light  to light up. Numbers 5&6 seems to favour the Instrument Cluster as faulty or its edge connector / plug is faulty or the harness is faulty which causes the EPC light to light up. Number 9 and letter A seems to blame the Electric Load Controller for triggering the EPC light. Numbers 1-4 and 7&8 seems to suggest some other electronic module caused the EPC light to light up. All these modules have one thing in common, they are all associated with the Powertrain Data Bus. In essence any module associated with the Powertrain Data Bus can cause the EPC light on VW Polo or other VAG cars to trigger.

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