# Service bulletin ESA\-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.

- Type: Service bulletin
- NHTSA id: 10054864
- Published by NHTSA: 2014\-03\-06
- Manufacturer's number: ESA\-26E1
- Manufacturer's date: 2013\-09\-18
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

## NHTSA's summary

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

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Electrical system, Engine, Exhaust and emissions, Catalytic converter, Software

## Vehicles listed

- 1999 to 2002 VOLKSWAGEN GOLF
- 1999 to 2002 VOLKSWAGEN GTI
- 1999 to 2002 VOLKSWAGEN JETTA

## Other bulletins for the same vehicles and component

- [TB011407](/bulletins/10241310.md), 2023-08-28, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER. Software Version Management
- [Guide](/bulletins/10240605.md), 2023-08-14, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). P0102, P1128, P1296 \- WA front oxygen sensor faults
- [26E1](/bulletins/10240597.md), 2023-08-14, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; UNKNOWN OR OTHER. 1999\-2002 Jetta, Golf and GTI with VR6 Engine Update ECM Software for Catalytic Converter Monitoring System.
- [A002155201173212](/bulletins/10204722.md), 2022-01-05, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
- [Campaign Circula](/bulletins/10155823.md), 2019-04-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. Emissions Service Action Circular \(VR6 Engine Update ECM Software for Catalytic Converter Monitoring System\): The ECM software for the catalytic converter monitoring system is too sensitive. This can cause the MIL to come on, and some vehicles may exceed Federal and/or California emissions standards. Also, in some cases this leads to unnecessary catalytic converter replacement. The corrective action taken for this issue was to Update ECM software.
- [V011812\-2014603](/bulletins/10149864.md), 2018-12-03, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Update content and include additional models and model year applicability.
- [TT001703](/bulletins/10133469.md), 2018-04-16, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Tip for Scan tool concerns that may occur duing a test plan
- [Quick Reference](/bulletins/10130748.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Quick Reference of vehicle concerns. Includes a list of Software versions and the technical bulletin numbers that referred to the concerns Updated
- [Ref. \- Reflash U](/bulletins/10128084.md), 2018-02-05, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Quick Reference Update Guide of the vehicles expected upgraded software level. The latest corresponding technical bulletins that address the issues, and concerns that have been had with the vehicles.
- [Update 02122016](/bulletins/10127681.md), 2018-02-05, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Quick Reference of vehicle concerns. Includes a list of Software versions and the technical bulletin numbers that referred to the concerns Updated

JSON: [/v1/bulletins/10054864](/v1/bulletins/10054864)

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