Technical Service Bulletin

01-22-02 - Mid Production - Update Programming Engine/Motor
Control Module -J623-

Transaction No:

2065992/4

Release date:

5/2/2023

Condition
Applicable Vehicles
Model(s)

Year

Eng. Code

Jetta

2019 - 2020

Golf

2019 - 2021

1.4T
DGXA, DJXA
1.4T
DGXA

Trans. Code

VIN Range
From

VIN Range To

All

All

All

All

All

All

Revision Table
Instance Number

Published Date

Version Number

Reason For Update

2065992/4

5/2/2023

01-22-02

Addition of model year
2019 Golf.

2065992/3

5/9/22

01-22-02

Diagnostic Trouble code
correction.

2065992/2

3/24/22

01-22-02

Title change due to sister
TB publishing.

2065992/1

2/03/22

01-22-02

Original publication.

Customer states there is low or no heat output from the air vents under certain cold weather conditions.
This TB also proactively corrects faults listed below.
Note:
If the customer is experiencing a low/no heat output concern and the ECM part number and
software level are not listed below please also check Technical Bulletin 2065975.
Tip:
This software update also includes modification for: P0441 P04F0 P148D P0496 and P060C (37682)
DTCs.

Page 1 of 9 Plus attachment.
© 2023 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

Transaction No:

2065992/4

Release date:

5/2/2023

01-22-02 - Mid Production - Update Programming Engine/Motor
Control Module -J623-

One or more of the following fault codes may be stored in the Engine Control Module (ECM) Fault
Memory:

DTC

Description

P0441

EVAP Emission Contr.Sys.Incorrect Purge Flow

P04F0

EVAP system high pressure purge line performance

P148D

Evaporative Emission System Leak Detection Pump
implausible frequency

P0496

EVAP System High Purge Flow

P060C (37682)

Internal Control Module Main Processor
Performance

Note:
DO NOT diagnose or replace components due to DTCs P0441, P04F0, P148D, P0496, P060C (37682)
faults before performing the update function as explained in this bulletin.

Technical Background
Current Engine/Motor Control Module -J623- software can cause low engine heat output or may lead to
various fault codes within the vehicle.

Production Solution
Improved Engine/Motor Control Module -J623- software.

Service
Update-Programming Procedure:
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.

Page 2 of 9 Plus attachment.
© 2023 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

01-22-02 - Mid Production - Update Programming Engine/Motor
Control Module -J623-

Transaction No:

2065992/4

Release date:

5/2/2023

The procedure 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.
ODIS-Service tester should be updated to the latest GFF technical version 11.0.0 or higher and SW
version 2.47.0 or higher.

WARNING:
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!

Note:
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.
TIP:
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 Control Module using the SVM Unit code as listed in the table below:

Page 3 of 9 Plus attachment.
© 2023 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

Transaction No:

2065992/4

Release date:

5/2/2023

01-22-02 - Mid Production - Update Programming Engine/Motor
Control Module -J623-

Jetta
Model

Engine

Old Software
Part No.

Old
Software
Version

New Software
Part No.

New
Software
Version (or
higher)

SVM Unit
Code

Jetta

1.4T

04E 906 024
AG

5854

04E 906 024
AG

9971

4846

04E 906 024 R

9971

4846

04E 906 024
AF

9971

4846

DGXA

6549
6657
6810
6995
7295
7464
9910
9970

Jetta

1.4T

04E 906 024 R

DGXA

5852
6546
6651
6808
6994
7293
7461
9907
9970

Jetta

1.4T
DGXA

04E 906 024
AF

5853
6548
6809
6993
7294
7463

Page 4 of 9 Plus attachment.
© 2023 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

Transaction No:

2065992/4

Release date:

5/2/2023

01-22-02 - Mid Production - Update Programming Engine/Motor
Control Module -J623-

9909
9970
Jetta

1.4T

04E 906 024 C

DJXA

Z720

04E 906 024 C

9971

4846

04E 906 024 M

9971

4846

04E 906 024
AR

9971

4846

4214
6127
6551
6653
6812
6997
7298
7462
9902
9970

Jetta

1.4T

04E 906 024 M

DJXA

Z720
4215
6128
6550
6658
6813
6996
7299
7465
9906
9970

Jetta

1.4T
DGXA

04E 906 024
AR

Z843
7257
9509
9911
9970

Page 5 of 9 Plus attachment.
© 2023 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and
other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.

Technical Service Bulletin

Transaction No:

2065992/4

Release date:

5/2/2023

01-22-02 - Mid Production - Update Programming Engine/Motor
Control Module -J623-

Jetta

1.4T
DJXA