# Service bulletin Circular 26N1

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: 10168804
- Published by NHTSA: 2019\-12\-07
- Manufacturer's number: Circular 26N1
- Manufacturer's date: 2019\-11\-20
- NHTSA component: EQUIPMENT; ENGINE

## NHTSA's summary

Due to a parts catalog error, an incorrect emissions related component may have been installed on some vehicles during a past service repair visit. Dealers will inspect and, if needed, replace the component as a proactive measure to ensure continued emissions compliance.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10168804-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10168804-9999.pdf)

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

## Components

Engine, Equipment and accessories

## Vehicles listed

- 2010 to 2013 AUDI A3

## Other bulletins for the same vehicles and component

- [TSB\_2082323\_1](/bulletins/11034728.md), 2026-07-07, Service bulletin: ENGINE. This bulletin provides informaiton when the engine is not running smoothly, misfiring.
- [TSB\_2021205\_10](/bulletins/11029367.md), 2026-03-03, Service bulletin: ENGINE. This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
- [TSB\_2060750\_5](/bulletins/11028398.md), 2026-02-06, Service bulletin: ENGINE. This bulletin provides information regarding UV leak additive for finding oil leaks.
- [TSB\_2075530\_2](/bulletins/11016532.md), 2025-04-04, Service bulletin: ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
- [A0124482014753\_13](/bulletins/11012476.md), 2025-01-07, Service bulletin: ENGINE. This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.
- [A1524532075530\_1](/bulletins/11009928.md), 2024-11-06, Service bulletin: ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
- [A2424632074810\_2](/bulletins/11009327.md), 2024-10-28, Service bulletin: ENGINE. This bulletin provides information when ther is an Engine: start/stop system fault shown and start/stop system not is working; mileage below 50 km/32 miles.
- [A0024842073507\_1](/bulletins/10252440.md), 2024-04-04, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides instructions on evaluating TDI vehicles for repurchase prior to repairs.
- [A9124632044694\_3](/bulletins/10250322.md), 2024-03-06, Service bulletin: EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). This bulletin provides information pertaining to MMI Navigation database concerns.
- [4014412018194](/bulletins/10250665.md), 2024-02-26, Service bulletin: EQUIPMENT; STRUCTURE. Shock absorber leaks: assessment aid

JSON: [/v1/bulletins/10168804](/v1/bulletins/10168804)

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