# Service bulletin Circular 26N6

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: 10175943
- Published by NHTSA: 2020\-06\-04
- Manufacturer's number: Circular 26N6
- Manufacturer's date: 2020\-05\-19
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

## NHTSA's summary

Over time and mileage, the factory\-installed catalyst may not perform as required.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175943-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175943-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Exhaust and emissions

## Vehicles listed

- 2018 VOLKSWAGEN ATLAS

## Other bulletins for the same vehicles and component

- [V0116152014815\_20](/bulletins/11038146.md), 2026-10-06, Service bulletin: ENGINE. Suggested fuel additive
- [VWP\-26\-07](/bulletins/11035774.md), 2026-08-05, Warranty extension: ENGINE. For applicable 2018\-2022 Atlas and Atlas Cross Sport 3.6L Settlement Class Vehicles \(NA6 warranty key\), the New Vehicle Limited Warranty will be extended to cover 80% of the replacement of the Water Pump or Water Pump Gasket by an authorized Volkswagen Dealer to 8.5 years or 85,000 miles, whichever occurs first, from the vehicle’s original in\-service date.
- [VWP\-26\-07 FAQ](/bulletins/11035773.md), 2026-08-05, Warranty extension: ENGINE. Supporting FAQ for VWP\-26\-07 Main Engine Wiring Harness Limited Warranty Extension \(Class Action\)
- [V1718062017813\_24](/bulletins/11035762.md), 2026-08-05, Service bulletin: ENGINE. Oil Consumption Measurement and Electronic Oil Consumption Measurement
- [V1719012012855\_81](/bulletins/11034617.md), 2026-07-07, Service bulletin: ENGINE. Volkswagen Engine Oil Standards
- [TT 13\-20\-01\_3](/bulletins/11034614.md), 2026-07-07, Service bulletin: ENGINE. Instruction, how to lubicate engine before initial start.
- [TT 10\-18\-02\_2](/bulletins/11034613.md), 2026-07-07, Service bulletin: ENGINE. Lubricating engine components before reassembly.
- [VOS\-26\-21](/bulletins/11030847.md), 2026-04-06, Service bulletin: ENGINE. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the error message ERP0204E could occur during perform initial operation, software configuration, SVM updates for any control module\(s\) etc.
- [V0123092071325\_2](/bulletins/11027250.md), 2026-01-07, Service bulletin: ENGINE. Update Engine/Motor Control Module J623.
- [WLA\-25\-11](/bulletins/11025452.md), 2025-11-10, Service bulletin: ENGINE. Coolant Bleed Procedure

JSON: [/v1/bulletins/10175943](/v1/bulletins/10175943)

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