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Service bulletin 26E1

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 id10240597
Published by NHTSA2023-08-14
Manufacturer's number26E1
Manufacturer's date2013-09-18
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; UNKNOWN OR OTHER

NHTSA's summary

1999-2002 Jetta, Golf and GTI with VR6 Engine Update ECM Software for Catalytic Converter Monitoring System.

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, Exhaust and emissions, Catalytic converter, Engine control module

Vehicles listed
VOLKSWAGEN GOLF1999, 2000, 2001, 2002
VOLKSWAGEN GTI1999, 2000, 2001, 2002
VOLKSWAGEN JETTA1999, 2000, 2001, 2002

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
Guide2023-08-14. Service bulletin. P0102, P1128, P1296 - WA front oxygen sensor faults
WA002023-08-14. Service bulletin. Emissions Recall Circular - 1999-2001 Volkswagen Folf/Jetta and New Beetle 2.0 Liter Gasoline Engine Vehicles Reprogramming of Engine Control Module and Replacement of Malfunctioning Oxygen Sensor
TT201301a2023-07-10. Service bulletin. To clear static ECM fault P1250 ?Fuel Level Too Low?, add fuel to vehicle and complete a road test of at least 10 miles. Simply adding fuel without completing a road test may not allow fault to clear.
TT2013012023-07-10. Service bulletin. To clear static ECM fault P1250 ?Fuel Level Too Low?, add fuel to vehicle and complete a road test of at least 10 miles. Simply adding fuel without completing a road test may not allow fault to clear.
ESA-26E12014-03-06. Service bulletin. VOLKSWAGEN: THE CATALYTIC CONVERTER MONITORING SYSTEM, WITH THE ECM SOFTWARE, IS TOO SENSITIVE AND CAUSES THE MALFUNCTION INDICATOR LAMP (MIL) TO COME ON AND EXCEED EMISSIONS STANDARDS FOR FEDERAL AND/OR CALIFORNIA. MODEL 1999-2002 JETTA, GOLF, GTI. *PE