V0125042078397_4 Service Bulletin/Repair Instructions

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Technical Service Bulletin
Transaction No.: 2078397/4
01-25-04 - DTC P0456 Software Update and Hardware Check
Condition

Applicable Vehicles

Model(s)
Year
Eng. Code
Trans. Code
VIN Range

From
VIN Range To
Taos
2022 - 2024
1.5T
All
All
All
All
All
All
(DNKA)

Jetta
2022 - 2024
1.5T

(DNKA)
Revision Table

Instance Number
Published Date
Version Number
Reason For Update
2078397/3
12/10/2025
01-25-04
Updated warranty table.
2078397/2
11/3/2025
01-25-04
Update to Step 3

directions.
2078397/1
06/23/25
01-25-04
Original publication.
Customer states MIL-ON with P0456 found in the Engine/Motor Control Module -J623-.
Technical Background

The following fault code must be stored in the Engine/Motor Control Module -J623- (ECM) Fault Memory:
DTC

P0456
Description

EVAP Emission Contr. Sys. (very small leak) Leak

Detected
NOTICE

DO NOT diagnose or replace components before performing the procedure below.
Production Solution

Updated Engine/Motor Control Module -J623- software introduced in production.
Service

MY-2022-23: PROCEED TO STEP 1

MY-2024 ONLY: PROCEED DIRECTLY TO STEP 3
STEP 1: Check currently installed software part # and version against table below.

If necessary, perform update found in Step 2. If vehicle software is already up to date, proceed to Step 3.
STEP 2: Update-Programming Procedure:

WARNING

Critical Warning: The Midtronics battery charger must be connected to the vehicle battery for the duration

of the programming, to ensure the battery state of charge remains above 12.5 volts during the update

process. If the battery drops below 12.5 volts, the programming could fail which may result in damage to

the control module. Control modules damaged by inadequate voltage will not be covered under the

warranty policy. The technician should verify the vehicle voltage prior to starting the update process, and

should monitor the voltage for the duration of the update.

– The pr may cancel itself if the hazard warning lights are not switched ON. The hazard warning lights

prevent the system from switching to bus sleep mode during the update procedure.

– ODIS-Service Service tester should be updated to the latest GFF technical version 25.0.2 or higher

and SW version 2.53.1 or higher
CAUTION

Radiator Fan(s) may cycle ON high speed during the Update Process! There is a risk that personal injury

may result if contact is made with spinning fan blades.

– Keep hands and all objects away from Radiator Fan(s) during Update Process.
NOTICE

Prior to launching the ODIS Service diagnostic applications and starting control module update process,

confirm tester screen saver and power settings in accordance with Diagnostic Device Hardware &

Windows® - VHW-20-02 Change Power Options After Windows®10 Upgrade. Failure to do so may result

in the tester entering power save mode during data transfer, and subsequent control module failure. When

using a VAS 6150/X or 6160/X tester in conjunction with a VAS 6154 wireless transmitter head for a flash

procedure, connect a USB cable between the transmitter head and the tester. Failure to do so may lead to

errors during the flash procedure.

– VAS tools must only be used with their power adapters plugged in. Under no circumstances should

they be used on battery power alone during the programming procedure.
To Update- Programming using Software Version Management (SVM), review and follow instructions in

Technical Bulletin Instance 2014603 “Software Version Management”.

The SVM process must be completed in its entirety so the database receives the update confirmation

response. A warranty claim may not be reimbursed if there is no confirmation response to support the claim

or action is carried out that is not explicitly stated in the Technical Bulletin.
Update the Engine/Motor Control Module -J623- using the SVM Unit code as listed in the table below:
MY- 2023 Software Table:

Model
Engine
Old Software Part

No.
Old Software

Version
New Software Part

No.
New Software

Version (or

higher)
SVM

Unit

Code
Taos
1.5T
05E906013BC
3109
05E906013BC
3314
4C6D
05E906013BD
3315
05E906013BF
3317
05E906013BH
3319
05E906013BE
3316
DNKA
2645

2495

2251

1845

05E906013BD
3110

2646

2496

2252

1846
05E906013BF
3113

2648

2515

2336

2136
05E906013BH
3114

2650

2516

2339

2137
05E906013BE
3111
2647

2497

2253

1847

05E906013BG
3112
05E906013BG
3318
05E906013BA
3322
2649

2498

2254
Jetta
1.5T
05E906013BA
DNKA
3117
.
1848

4C6D
2643

2494

2301

1843

3116
05E906013BB
3321
05E906013AT
3320
el
05E906013BB
2644

2493

2302

1844

05E906013AT
3115

2642

2492

2300

1842
MY-2022 Software Table:

Model Engine
Taos
1.5T

DNKA
Old Software Part

No.
Old Software

Version
New Software Part

No.
New Software

Version (or higher)
SVM Unit

Code
05E.906.013.B
3118
05E.906.013.B
3308
4CB9
2635

2530

1934

1794
1623

1521

1310

0604

0510

0439

05E.906.013.E
3119
05E.906.013.E
3311
4CB9
05E.906.013.C
3309
4CB9
05E.906.013.F
3312
4CB9

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