V0126012080777_1 Service Bulletin/Repair Instructions

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Transaction No.:
Technical Service Bulletin
2080777/1
01-26-01 - MIL On DTC, P2B7A, P2B7B, P2B7C or P2B7D Stored in Engine-Motor

Control Module -J623-
Condition

Applicable Vehicles

Model(s)
Year
Eng. Code
Trans Code
VIN Range From
VIN Range To
Jetta
2025 - 2026
DNKA
All
BU_SM000001
BU_TM021871
Taos FWD
2025 - 2026
DYBA
All
CL_SM000001
CL_TM036635
Revision Table

Instance Number Published Date Version Number Reason For Update

2080777/1
01/28/26
01-26-01
Original publication.
One or more of the following fault codes may be stored in the Engine/Motor Control Module -J623- (ECM)

Fault Memory:
DTC
Description
P2B7A EVAP System Pressure Sensor/Switch "C" Circuit

P2B7B EVAP System Pressure Sensor/Switch "C" Circuit Range/Performance

P2B7C EVAP System Pressure Sensor/Switch "C" Circuit Low

P2B7D EVAP System Pressure Sensor/Switch "C" Circuit High
Technical Background

Orifice size inside the Fuel Tank Pressure Sensor (-G400-) plug housing is too small, causing sensor circuit

faults.
Production Solution

Improvements to Fuel Tank Pressure Sensor (-G400-) plug housing to increase orifice size.
Service
1. Access the Fuel Tank Pressure Sensor (-G400-) with plug housing. See Repair Group 20, Fuel Supply,

Sensors, in Elsa.

2. Inspect the Fuel Tank Pressure Sensor with plug housing to verify the current component installed.
Figure 1: Highlights the difference in assembly appearance with the addition of printed font.
Figure 2: Highlights the difference in assembly appearance with the addition of an indent/notch.
3.

•
If the vehicle is equipped with the old Fuel Tank Pressure Sensor assembly shown above, replace the

complete Fuel Tank Pressure Sensor assembly with plug housing.
•
If the vehicle is equipped with the new Fuel Tank Pressure Sensor assembly shown above, further

diagnosis is required. In this case, this TSB no longer applies.
4. Test drive vehicle and re-scan for DTC’s. If faults return, further diagnosis is needed.
Warranty
To determine if this procedure is covered under Warranty, always refer to the Warranty Policies and

Procedures Manual 1)

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

Code(s)
VIN Range From
VIN Range To
Jetta
2025 - 2026
DNKA
All
BU_SM000001
BU_TM021871
Taos FWD
2025 - 2026
DYBA
All
CL_SM000001
CL_TM036635
SAGA Coding

Claim Type:
Service Number:

2041
Use applicable Claim Type 1)

Damage

Code
HST
Damage Location (Depends on Service

No.)
--
--
0010
Parts Manufacturer
Jetta, Taos
VOA 2)
Labor Operation 3) : NVLD pressure

switch remove and install (JETTA ONLY)
20411999 = 30 TU
Labor Operation 3) : NVLD pressure

switch remove and install (TAOS FWD

ONLY)
20411902 = see Elsa for latest time units
Labor Operation 3) : GFF/Guided

Functions and Battery Charged
01500010 = see Elsa for latest time units
Diagnostic Time 4)

GFF Time expenditure
01500060 = 00 TU
NO
Road Test
01210004 = 10 TU
YES
Technical Diagnosis
01320000 = 00 TU
NO
Claim Comment: Input “As per Technical Bulletin 2080777” in comment section of Warranty Claim.

1)
Vehicle may be outside any Warranty in which case this Technical Bulletin is informational only.
2)
Code per warranty vendor code policy.
3)
Labor Time Units (TUs) are subject to change with ELSA updates.
4)
Documentation required per Warranty Policies and Procedures Manual.
Required Parts and Tools
Part No:
Part Description
Quantity
5WA201700B*
Fuel Tank Pressure Sensor with Plug

Housing
1
*Part numbers are accurate at time of publication. Always refer to ETKA for the latest part information.
Tool Description
Tool No:
Midtronics Battery Tester/Charger
GRX3000VAS

or

MTRMSP0702 battery maintainer/charger
VAS Diagnostic Tool
VAS 6150/X & VAS 6160/X and ODIS Service with

current online updates
Additional Information

All part and service references provided in this Technical Bulletin are subject to change and/or removal.

Always check with your Parts Dept. and Repair Manuals for the latest information.

© 2026 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.

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