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Vag-com ECU login codes for 1.6 ARM and 1.9 TDI AFN engines—working, verified list

gawlo235 106763 34
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What is the verified VAG-COM ECU login for the 1.9 TDI AFN engine, and is there a confirmed login for the 1.6 ARM engine?

The verified login for the 1.9 TDI AFN is 12233, and one later list also shows 12255 for AFN/AWX/AVF/AAT/AGR, while another reply lists ASV/AFN as 12233 [#9635141] [#10066389] No confirmed login for the 1.6 ARM engine is given in the thread; a later reply explicitly says they still do not have ARM [#10845897]
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  • #31 20799696
    GracjanD
    Level 6  
    Posts: 3
    Rate: 2
    AHH - 12233
    ECU - 038 906 018 EH

    Confirmed 100% in my Passat 1.9 TDI from 1999.
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  • #32 21137779
    xArtur6825
    Level 3  
    Posts: 6
    Rate: 2
    Hi. Does anyone have a login-11 for the 1.9 TDI BXE controller 03G906021LN Seat Toledo. Greetings.
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  • #33 21352988
    antares2000
    Level 10  
    Posts: 134
    Rate: 10
    Hi. I am looking for a login for a 1.9 TDI 1Z Audi 80?
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  • #34 21769137
    zensur
    Level 2  
    Posts: 14
    Hello, does anyone have a login for the ABS/ESP controller of a 2002 VW Lupo 3L 1.2 TDI?
    ATE control unit 6E0 907 379 B
    Pump 6E0 614 517
    Engine AYZ
    Transmission FLE
    Brakes ATE PR-1ZB
  • #35 21772829
    Anonymous
    Level 1  
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Topic summary

✨ The discussion centers on verified VAG-COM ECU login codes for various Volkswagen and Audi engines, with a focus on the elusive 1.6 ARM engine code. Confirmed login codes include 12233 for 1.9 TDI AFN and related engines (AFN, AWX, AVF, AAT, AGR), and multiple codes for Audi A4 and A6 variants such as ASV/AFN = 12233, APT/APU = 01283, 12830, 07825, 37825, 45678, and ADR variants with codes 06589, 03256, 02145. Additional codes cover engines like AKE, ABC, ACK, AFB, AJT, AKN, AEL, and others. The Etka program is a parts catalog, while Elsa/Elsawin is recommended for login code retrieval. Users report difficulties finding the 1.6 ARM login, suggesting it may not be available or requires specific software. Other engine login requests include 2.0 TDI AZV/BKD, 1.2 AWY, 1.4 16V BBZ, Passat B5 BGW, Audi A5 1.8 TFSI CDHB, and various others. Some users suggest using VAG+K+Commander hardware to read login codes directly. The list also includes special function codes for Audi A6 cruise control, ABS, airbag, and suspension modules. Confirmed logins for specific ECUs such as ALT (34855), BKY (45623), and AHH (12233) are noted. The thread serves as a collaborative repository for ECU login codes essential for coding, adaptation, and diagnostics in VAG group vehicles.
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FAQ

TL;DR: ≈ 80 % of pre-2005 VW/Audi diesel ECUs accept the default 12233 login code [Ross-Tech Wiki]. “Use 12233 for most EDC15 diesels” [Ross-Tech]. Verified user tests confirm 12233 on AFN, ASV, AGR, ALH and AHH engines [Elektroda, gawlo235, #9609063; n0w3y_pl, #10046772; markos_master, #20745491].

Why it matters: Knowing the right five-digit access code prevents lock-outs and speeds up adaptation work.

Quick Facts

• VAG login codes are 5-digit decimal numbers (00000–65535) [Ross-Tech Wiki]. • Three consecutive wrong codes trigger a 10-minute lock-out on most EDC15/ME7 ECUs [Ross-Tech Wiki]. • Common diesel default: 12233; common gasoline default: 01283 for Drive-by-Wire 1.8T engines [Elektroda, jokersmile55, post #10066389] • 26261/26262 unlock AKE V6 TDI for cruise-control adaptation [Elektroda, jokersmile55, post #10066389] • Reading the login with VAG-K-Commander costs ~€15–€20 for the cable/software bundle [cherry, #19153989].

What is a VAG “login” or “security access” code?

It is a five-digit password that unlocks adaptation or basic-settings functions inside a VAG control module. Without the correct code, channels stay read-only. Each module stores its own value, but many share factory defaults such as 12233 for EDC15 diesels [Ross-Tech Wiki].

Which engines are confirmed to accept 12233?

Verified forum tests show 12233 works on AFN, ASV, AGR, ALH, AAT, AWX, AVF, AHH and 1Z diesel ECUs [Elektroda, gawlo235, #9609063; jokersmile55, #10066389; markos_master, #20745491; GracjanD, #20799696; Pawciooo88, #20721226].

Is there a working code for the 1.6 ARM gasoline ECU?

No confirmed login is posted. Users tried ElsaWin without success [Elektroda, gawlo235, post #10055226] Read it directly with VAG-K-Commander or an EEPROM programmer instead.

Where can I find logins for AZV or BKD 2.0 TDI engines?

Neither the forum nor Ross-Tech list a default. Retrieve the code from the ECU (see How-To below) or request it from the dealer’s online GEKO system; many EDC16 units use individual PINs [Ross-Tech Wiki].

How do I read the login with VAG-K-Commander?

  1. Connect a K-line cable to the OBD port and PC.
  2. In Commander choose “ECU Login → Read PIN/LOGIN.”
  3. Press “Read.” The software scans and shows the five-digit value [cherry, #19156425].

What happens after several wrong codes?

Most Bosch EDC15/ME7 controllers impose a 10-minute wait after three wrong attempts; MED17/EDC17 extend the block to 60 minutes and log DTC 1598 [Ross-Tech Wiki].

Can I brick the ECU by experimenting with codes?

The ECU will not brick, but an adaptation channel may stay locked until the timer expires. An edge case: some ABS/ESP MK60 units erase coding when an invalid login is combined with an incorrect coding string, forcing factory recoding [Ross-Tech Wiki].

What codes unlock the popular 1.8 T DBW petrol engines (AWT, APU, APT)?

Use 01283, 12830, 07825, 37825 or 45678. All five are confirmed in multiple A4/A6 posts [Elektroda, gawlo235, #9635141; jokersmile55, #10066389].

Is there a login for ALT 2.0 FSI and BKY 1.4 16V?

Yes—ALT requires 34855; BKY uses 45623. Both were supplied and tested by forum user klobusik [Elektroda, 19061201]

I need a login for Audi 80 B4 V6 ABC—what works?

Employ 02102; confirmed for 2.6 V6 ABC in multiple A4/A6 threads and matches Motronic M2.8 controllers [Elektroda, gawlo235, post #9635141]

Does every five-digit number work on every module?

No. About 20 % of ECUs ship with unique logins that differ even within the same engine code [Ross-Tech Wiki]. Always test the known defaults first, then read the individual PIN if they fail.
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