NHTSA ID Number: 11020320
Manufacturer Communication Number: V0125042078029_1
TSB/Document Date: 2025-07-08
Summary
DTC P0456 & Update programming for Engine/Motor Control Module
Technical product information
01-25-04 - DTC P0456 Software Update and Hardware Check
Transaction No.: 2078029/1
Customer statement / workshop findings
Applicable Vehicles
Model(s)
Year
Eng. Code Trans. Code VIN Range From VIN Range To
Taos
2022 2024
1.5T
(DNKA)
All
All
All
Jetta
2022 2024
1.5T
(DNKA)
All
All
All
Revision Table
Instance Number
Published Date
Version Number
2078029/1
06/12/25
01-25-xx
Reason For Update
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
Description
P0456
EVAP Emission Contr. Sys. (very small leak) Leak Detected
NOTICE
DO NOT diagnose or replace components before performing the procedure below.
Production change
Updated Engine/Motor Control Module -J623- software introduced in production.
Measure
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
DNKA
05E906013BC
3109
2645
2495
2251
1845
05E906013BC
3314
4C6D
05E906013BD
3110
2646
2496
2252
1846
05E906013BD
3315
05E906013BF
3113
2648
2515
2336
2136
05E906013BF
3317
05E906013BH
3114
2650
2516
2339
2137
05E906013BH
3319
05E906013BE
3111
05E906013BE
3316
2647
2497
2253
1847
Jetta
1.5T
DNKA
05E906013BG
3112
2649
2498
2254
1848
05E906013BG
3318
05E906013BA
3117
2643
2494
2301
1843
05E906013BA
3322
05E906013BB
3116
2644
2493
2302
1844
05E906013BB
3321
05E906013AT
3115
2642
2492
2300
1842
05E906013AT
3320
4C6D
MY-2022 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
DNKA
05E.906.013.B
3118
2635
2530
1934
1794
1623
1521
1310
0604
0510
0439
05E.906.013.B
3308
4CB9
05E.906.013.E
3119
2638
2532
1935
1624
1522
1311
05E.906.013.E
3311
4CB9
0833
0442
0605
0511
Jetta
1.5T
DNKA
05E.906.013.C
3120
2636
2531
1936
1795
1546
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TSB/Document ID: V0125042078029_1
Replacement Service Bulletin Number:
MFR Communication Date: 2025-06-12
MFR Internal Campaign ID/Software Version: 4C6D & 4CB9
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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