Coding diesel direct injection system control unit J248 — AUDI

Coding diesel direct injection system control unit J248 on Audi: factory workshop procedure for engines AFB, AKE, AKN.

Workshop procedure for AUDI — the factory write-up, straight from real workshop data.

factory workshop text 3 engine codes engine codes merged from 2 documented variants

🔧 Engine codes this applies to

📋 Procedure

Audi
Audi A8
1994
Power unit
TDI injection and glow plug system (6-cyl.)
Edition
12.2006
Coding
diesel direct injection system control unit
J248
If the appropriate code for the vehicle is not displayed or if the control unit has been renewed, the control unit must be coded as follows.
Connect up the
vehicle diagnosis and service information system
VAS 5052
and select vehicle system
“Engine electronics”
. When doing this, the ignition must be switched on.
Select diagnostic function
“Coding control unit”
from list.
Enter control unit coding via key pad as specified in coding table
Make up the code number according to the following example:
Audi A8
00
Not used
0
Emission standard EU III D
1
Front-wheel drive and manual gearbox
2
Code number
00
0
1
2
Coding versions for
diesel direct injection system control unit
J248
Vehicle type
Not used
Country/emissions
Gearbox
00 =
Audi A8
0 =
Display
“0”
0 =
EU II
0 =
---
01 =
---
1 =
---
1 =
EU III D
1 =
Automatic gearbox, front-wheel drive
with/without ESP
02 =
---
2 =
---
2 =
---
2 =
Manual gearbox
front-wheel drive
with/without ESP
03 =
---
3 =
---
3 =
3 =
Manual gearbox
four-wheel drive without ESP
04 =
4 =
---
4 =
---
4 =
Automatic gearbox
four-wheel drive without ESP
05 =
---
5 =
---
5 =
---
5 =
Manual gearbox
four-wheel drive with ESP
06 =
---
6 =
---
6 =
---
6 =
Automatic gearbox
four-wheel drive with ESP
Enter new code after replacing the following engine control units:
Engine control unit, old version
Engine control unit, new version
Code:
Model
4D0 907 401 B
4D0 907 401 N
00301
Automatic gearbox with front-wheel drive
00402
Manual gearbox with front-wheel drive
00504
Automatic gearbox with four-wheel drive without ESP
4D0 907 401 C
4D0 907 401 M
00312
Manual gearbox with front-wheel drive
4D0 907 401 G
4D0 907 401 N
00001
Automatic gearbox with front-wheel drive
00102
Manual gearbox with front-wheel drive
00204
Automatic gearbox with four-wheel drive without ESP
Enter new code after replacing the following engine control units:
Engine control unit, old version
Engine control unit, new version
Code:
Model
4D0 907 401 H
4D0 907 401 M
00001
Automatic gearbox with front-wheel drive
00102
Manual gearbox with front-wheel drive
4D0 907 401 J
4D0 907 401 M
00206
Automatic gearbox with four-wheel drive and ESP
Note
The abbreviation
“ESP”
stands for Electronic Stabilisation Program

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Workshop data on this page last updated 20 Sep 2026.