Transaction
No:

2060925/3

Release date:

3/1/2021

Technical Service Bulletin

01-21-01 - Early Production - Update Programming Engine/Motor
Control Module -J623-, Various Fault Codes Stored

Condition
Applicable Vehicles
Model(s)

Year

Eng. Code

Trans. Code

VIN Range
From

VIN Range To

Jetta

2019

1.4 L

All

All

All

(DGXA)

Revision Table
Instance Number

Published Date

Version Number

Reason For Update

2060925/3

3/1/2021

01-21-01

To add symptom code to
fault table.

2060925/2

2/4/2021

01-21-01

To remove VIN range
Information.

2060925/1

1/11/2021

01-21-01

Original publication.

Tip:
This software update also includes modification for: P2279, P0133, P2181, P0111, P00FE, P0196,
P0135, P04F0, P0606, P060C, P0125, P02CC, P02CD, P02CE, P02CF, P02D0, P02D1, P02D2, P02D3,
P0301, P0302, P0303, P0304, P0420, P050B, P13EA, P068A, P2431 and U1008.
One or more of the following fault codes may be stored in the Engine/Motor Control Module -J623- Fault
Memory:
DTC

Description

P2279

Intake Air System Leak

P0133

O2 Sensor Circ.,Bank1-Sensor1 Slow Response

P2181

Cooling System Performance

P0111

Intake Air Temperature Sensor 1 Bank 1 Circuit
Range/Performance

P00FE

EVAP System Purge Vapor Line Restricted/Blocked
Page 1 of 7 plus attachment

© 2021 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

01-21-01 - Early Production - Update Programming Engine/Motor
Control Module -J623-, Various Fault Codes Stored

Transaction
No:

2060925/3

Release date:

3/1/2021

P0196

Engine Oil Temperature Sensor Circuit
range/performance

P0135

O2 Sensor Heater Circ.,Bank1-Sensor1 Malfunction

P04F0

EVAP system high pressure purge line performance

P0606

ECM/PCM Processor

P060C

Internal Control Module Main Processor
Performance (Symptom Code 30923 ONLY)

P0125

Insufficient Coolant Temp. for Closed Loop Fuel
Control

P02CC

Cylinder 1 Fuel Injector Offset Learning At Min Limit

P02CD

Cylinder 1 Fuel Injector Offset Learning At Max Limit

P02CE

Cylinder 2 Fuel Injector Offset Learning At Min Limit

P02CF

Cylinder 2 Fuel Injector Offset Learning At Max Limit

P02D0

Cylinder 3 Fuel Injector Offset Learning At Min Limit

P02D1

Cylinder 3 Fuel Injector Offset Learning At Max Limit

P02D2

Cylinder 4 Fuel Injector Offset Learning At Min Limit

P02D3

Cylinder 4 Fuel Injector Offset Learning At Max Limit

P0301

Cyl.1 Misfire Detected

P0302

Cyl.2 Misfire Detected

P0303

Cyl.3 Misfire Detected

P0304

Cyl.4 Misfire Detected

P0420

Catalyst System,Bank1 Efficiency Below Threshold

P050B

Cold Start Ignition Timing Performance

P13EA

Cold Start Ignition Timing Performance Off Idle

Page 2 of 7 plus attachment
© 2021 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

01-21-01 - Early Production - Update Programming Engine/Motor
Control Module -J623-, Various Fault Codes Stored

Transaction
No:

2060925/3

Release date:

3/1/2021

P068A

ECM/PCM Power Relay De-Energized Performance
- Too Early

P2431

Secondary Air Injection System Air Flow/Pressure
Bank 1 Sensor Circuit Range/Performance

U1008

Diagnostic interface for data bus Read out DTC

Note:
DO NOT diagnose or replace components due to P2279, P0133, P2181, P0111, P00FE, P0196, P0135,
P04F0, P0606, P060C, P0125, P02CC, P02CD, P02CE, P02CF, P02D0, P02D1, P02D2, P02D3, P0301,
P0302, P0303, P0304, P0420, P050B, P13EA, P068A, P2431 or U1008 faults before performing the
update function as explained in this bulletin.

Technical Background
Current Engine/Motor Control Module -J623- software can 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.
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!

Page 3 of 7 plus attachment
© 2021 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

01-21-01 - Early Production - Update Programming Engine/Motor
Control Module -J623-, Various Fault Codes Stored

Transaction
No:

2060925/3

Release date:

3/1/2021

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/Motor Control Module -J623- using the SVM Unit code as listed in the table below:

Model

Engine

Old Software