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Service bulletin TT 01 19 05_4

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10203451
Published by NHTSA2021-12-07
Manufacturer's numberTT 01 19 05_4
Manufacturer's date2021-11-04
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE

NHTSA's summary

Diagnostic assistance for no start or no communication with ECM with DTC U0100 stored.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Engine control module

Trouble codes named

U0100

Vehicles listed
VOLKSWAGEN ARTEON2019
VOLKSWAGEN ATLAS2018, 2019
VOLKSWAGEN BEETLE2018, 2019
VOLKSWAGEN BEETLE CONVERTIBLE2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
VOLKSWAGEN GOLF2018, 2019
VOLKSWAGEN GOLF SPORTWAGEN2018, 2019
VOLKSWAGEN GTI2018 to 2019
VOLKSWAGEN JETTA2018, 2019
VOLKSWAGEN PASSAT2018, 2019
VOLKSWAGEN TIGUAN2018, 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
TT 01 19 05_62024-03-06. Service bulletin. Engine Crank, No Start or No -J623- ECM Communication with DTC U0100 Stored in ECM Fault Memory
V0121022060969_42024-01-04. Service bulletin. Update programming of Engine motor control module -623- Improvements made to ECM software for better combustion stability during catalyst heating and engine warmup.
V0123092071325_12023-11-06. Service bulletin. Update Programming in Engine/Motor Control Module, DTC P054A
VIN4APIN202305172023-06-06. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states MIL-on, fault P2402 stored in ECM memory Customer states MIL-on, fault P04F0 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Noise from front end while driving Customer states condensation in the taillights Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract
VIN4APIN202305152023-06-06. Service bulletin. Customer states MIL-on, P0442 stored in ECM memory Customer states MIL-on, fault P2402 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Noise from front end while driving Customer states MIL-on/Airbag light, fault U019900 and/or B101715 stored in ECM/Airbag memory Customer states condensation in the taillights Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat memory is inoperative Customer states seat belt won't retract
VOS-23-102023-05-05. Service bulletin. Instructional document regarding the installation of a hotfix for the ODIS service software. Hotfix is to be used after an ECM Replacement
VIN4APIN202303302023-04-06. Service bulletin. Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states MIL-on, fault P2402 stored in ECM memory Customer states rattle from beneath the vehicle Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Noise from front end while driving Customer states MIL-on/Airbag light, fault U019900 and/or B101715 stored in ECM/Airbag memory Customer states key FOB lock/unlock functions do not work via button press (not KESSY) Customer states seat belt won't retract
VIN4APIN202303062023-04-06. Service bulletin. Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states rattle from beneath the vehicle Customer states MIL-on with P0087, P1020, P053F and/or P0148 Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Noise from front end while driving Customer states MIL-on/Airbag light, fault U019900 and/or B101715 stored in ECM/Airbag memory Customer states seat belt won't retract
VIN4APIN202303012023-04-06. Service bulletin. Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states rattle from beneath the vehicle Customer states MIL-on with P0087, P1020, P053F and/or P0148 Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Noise from front end while driving Customer states MIL-on/Airbag light, fault U019900 and/or B101715 stored in ECM/Airbag memory Customer states seat belt won't retract
VIN4APIN202302202023-03-06. Service bulletin. Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Customer states MIL-on, fault P0456 and/or P0442 stored in ECM memory Noise from front end while driving Customer states MIL-on/Airbag light, fault U019900 and/or B101715 stored in ECM/Airbag memory Customer states seat belt won't retract