Loading...

NHTSA ID Number: 10133328

Manufacturer Communication Number: Circular-Emissio

TSB/Document Date: 2018-04-16


Summary

Over time and mileage and under certain conditions, the factory-installed catalysts may not perform as required by Federal regulations. If the effectiveness of a catalyst is reduced, this may result in an increase in tailpipe emissions and the vehicle could fail to pass an emissions inspection. ? Added repair availability for A8 (criteria 4E) and A6 (criteria 4F). ? Updated claiming instructions. ? Note added to repair instructions regarding consequential damage.


inspection.

What will we do?

To ensure that the vehicle continues to meet emissions regulatory requirements, your authorized
AudieBay logo dealer will install improved catalysts. This work will take up to two days to complete and will
be performed for you free of charge. Please keep in mind that your dealer may need additional
time for the preparation of the repair, as well as to accommodate their daily workshop schedule.

What should you do?

In order to limit any possible inconvenience, please contact your authorized AudieBay logo dealer as soon
as possible to schedule this service.
On or about December 29, 2017 the necessary repair instructions and parts will be available to
your authorized AudieBay logo dealer.

Lease vehicles and
address changes

If you are the lessor and registered owner of the vehicle identified in this action, please forward
this letter immediately via first-class mail to the lessee within ten (10) days of receipt. If you have
changed your address or sold the vehicle, please fill out the enclosed prepaid Owner Reply card
and mail it to us so we can update our records.

Reimbursement of
Expenses

If you have previously paid for repairs relating to the condition described in this letter, the
enclosed form explains how to request reimbursement. We would be pleased to review your
reimbursement request.

Can we assist you
further?

If your authorized AudieBay logo dealer fails or is unable to complete this work free of charge within a
reasonable time, please contact AudieBay logo Customer Relations Monday through Friday from 8AM to
8PM EST at 1-800-822-2834 or via our “Contact AudieBay logo Canada” page at www.audi.ca.

We apologize for any inconvenience this matter may cause; however we are taking this action to help ensure your vehicle
continues to meet and exceed your expectations.
Sincerely,
AudieBay logo Customer Protection

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized AudieBay logo dealer. 2018 AudieBay logo of America, Inc. and AudieBay logo Canada. All Rights Reserved.
February 2018

26J2 Page 8 of 23

Customer Letter Example (CANADA) A6/A8 VEHICLES ONLY – February 2018 REPAIR DATE

This notice applies to your vehicle:
Subject: Emissions Recall 26J2 – Catalysts
Certain 2008-2011 Model Year AudieBay logo Vehicles with 4.2L FSI Gasoline Engine
Dear AudieBay logo Owner,
This notice is sent to you in accordance with the requirements of the Canadian Environmental Protection Act, 1999. AudieBay logo has
determined that a defect, which relates to a prescribed emission standard, exists in certain 2008-2011 model year AudieBay logo 4.2L FSI
gasoline engine vehicles. Our records show that you are the owner of a vehicle affected by this action.
What is the issue?

Over time and mileage and under certain conditions, the factory-installed catalysts may not
perform as required by Federal regulations. If the effectiveness of a catalyst is reduced, this may
result in an increase in tailpipe emissions and the vehicle could fail to pass an emissions
inspection.

What will we do?

To ensure that the vehicle continues to meet emissions regulatory requirements, your authorized
AudieBay logo dealer will install improved catalysts. This work will take up to two days to complete and will
be performed for you free of charge. Please keep in mind that your dealer may need additional
time for the preparation of the repair, as well as to accommodate their daily workshop schedule.

What should you do?

In order to limit any possible inconvenience, please contact your authorized AudieBay logo dealer as soon
as possible to schedule this service.
In February 2018 the necessary repair instructions and parts will be available to your authorized
AudieBay logo dealer.

Lease vehicles and
address changes

If you are the lessor and registered owner of the vehicle identified in this action, please forward
this letter immediately via first-class mail to the lessee within ten (10) days of receipt. If you have
changed your address or sold the vehicle, please fill out the enclosed prepaid Owner Reply card
and mail it to us so we can update our records.

Reimbursement of
Expenses

If you have previously paid for repairs relating to the condition described in this letter, the
enclosed form explains how to request reimbursement. We would be pleased to review your
reimbursement request.

Can we assist you
further?

If your authorized AudieBay logo dealer fails or is unable to complete this work free of charge within a
reasonable time, please contact AudieBay logo Customer Relations Monday through Friday from 8AM to
8PM EST at 1-800-822-2834 or via our “Contact AudieBay logo Canada” page at www.audi.ca.

We apologize for any inconvenience this matter may cause; however we are taking this action to help ensure your vehicle
continues to meet and exceed your expectations.
Sincerely,
AudieBay logo Customer Protection

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized AudieBay logo dealer. 2018 AudieBay logo of America, Inc. and AudieBay logo Canada. All Rights Reserved.
February 2018

26J2 Page 9 of 23

Campaign Work Procedure

26J2 Emission Recall

NOTE

Damages resulting from improper repair or failure to follow these work instructions are the dealer’s
responsibility and are not eligible for reimbursement under this action.

This procedure must be read in its entirety prior to performing the repair.

Due to variations in vehicle equipment and options, the steps/illustrations in this work procedure may not
identically match all affected vehicles.

Diagnosis and repair of pre-existing conditions in the vehicle are not covered under this action.

Vehicle Repair Availability
Criteria

Model

Repair Availability

8T

S5

RELEASED

4E

A8

RELEASED

4F

A6

RELEASED

Required Parts
Model/Criteria

S5 w/ Automatic
Transmission
(criteria 8T)

Quantity

Part Number

Part Description

1

8K0254252BX

Catalyst - Right

1

8K0254200LX

Catalyst - Left

2

8K0253115A

Gasket - Catalyst to manifold

2

8K0253115K

Gasket - Catalyst to exhaust

12

N 91130801

Nut - Catalysts

2

N 02300313

Nut - Bracket to Catalyst

2

1K0253141N

Exhaust Clamp

6

N 91151101

Subframe Crossbrace Bolts

2

N 10518405

Bolt- Steering Shaft

2

N 90666003

O - Ring ATF Line

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized AudieBay logo dealer. 2018 AudieBay logo of America, Inc. and AudieBay logo Canada. All Rights Reserved.
February 2018

26J2 Page 10 of 23

Model/Criteria

S5 w/ Manual
Transmission after VIN
8T_8_023117
(criteria 8T)

Quantity

Part Number

Part Description

1

8K0254252BX

Catalyst - Right

1

8K0254200LX

Catalyst - Left

2

8K0253115A

Gasket - Catalyst to Manifold

2

8K0253115K

Gasket - Catalyst to Exhaust Pipe

12

N 91130801

Nut - Catalysts

2

N 02300313

Nut - Bracket to Catalyst

4

N 91129601

BoltTransmission to Engine

2

N 91129901

Bolt - Transmission to Engine

2

N 91153201

Bolt - Transmission to Engine

SEE ETKA

Engine Coolant

2

N 91150701

Bolt - Transmission to Engine

2

1K0253141N

Exhaust Clamp

6

N 91151101

Subframe Crossbrace Bolts

6

N 10719001

Driveshaft Bolts

1

N 10518405

Bolt- Steering Shaft

1

N 10139201

O-Ring - Right Coolant Pump to Flange

1

N 90912501

O-ring - Coolant Flange to Head

1

N 90761102

Nut - Gearshift Lever to Transmission

6

N 91143203

Bolt - Clutch Module to Drive Plate

12

N 90441103

Bolt - Axle Shaft to Transmission

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized AudieBay logo dealer. 2018 AudieBay logo of America, Inc. and AudieBay logo Canada. All Rights Reserved.
February 2018

26J2 Page 11 of 23

Model/Criteria

S5 w/ Manual
Transmission before
VIN 8T_8_023117
(criteria 8T)

Quantity

Part Number

Part Description

1

8K0254252BX

Catalyst - Right

1

8K0254200LX

Catalyst - Left

2

8K0253115A

Gasket - Catalyst to Manifold

2

8K0253115K

Gasket - Catalyst to Exhaust Pipe

12

N 91130801

Nut - Catalysts

2

N 02300313

Nut - Bracket to Catalyst

2

1K0253141N

Exhaust Clamp

6

N 91151101

Subframe Crossbrace Bolts

6

N 10719001

Driveshaft Bolts

1

N 10518405

Bolt- Steering Shaft

1

N 10139201

O-Ring - Right Coolant Pump to Flange

1

N 90912501

O-ring - Coolant Flange to Head

SEE ETKA

Engine Coolant

1

N 90761102

Nut - Gearshift Lever to Transmission

2

N 10255501

Power Steering Line Hose Clamp

8

WHT005657

Subframe Bolt

2

N 90986501

Fuel Line Clamps

2

N 90761102

Bolt - Lock CarriereBay logo Brace

1

4E0260749A

A/C line O-ring

1

8E0260749C

A/C line O-ring

2

N 10106402

Nut - Lower Control Arm

2

N 10241202

Bolt - Lower control arm

2

N 10699901

Bolt - Stabilizer Link

4

N 10425302

Bolt - Upper Guide Link

4

N 10286110

Nut - Upper Guide Link

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized AudieBay logo dealer. 2018 AudieBay logo of America, Inc. and AudieBay logo Canada. All Rights Reserved.
February 2018

26J2 Page 12 of 23

Model/Criteria

Quantity

Part Number

Part Description

1

079253019JX

Catalyst - Left

1

079253020JX

Catalyst - Right

1

079103484C

Right Cylinder Head Cover Gasket

1

079103650C

Gasket

2

079253039F

Gasket

2

1K0253141N

Exhaust Clamp

123

SaleBestseller No. 1
Autel Scanner MaxiCOM MK900BT, 2026 MK900-BT V2.0 Bidirectional Diagnostic Tool, 8in Up of MK900 MX900 MK808S MK808BT MX808S MK808Z, 3000+ Active Tests, 40+ Service, CAN-FD&DOIP, All System, FCA 11 OS
  • 💯【Conta.ct us for Support Directly】If you met any...
  • 🔥🔥🔥【2026 AUTEL FLAGSHIP MK900BT MK900-BT, NEW...
  • 🚗【3000+ ACTIVE TESTS (50➡3000+), SAME AS MS...
  • 🚗【40+ HOT SERVICES FOR 150 MAKES (28+➡40+)】Full...
  • 🚗【OE ALL SYSTEM DIAGNOSE, AUTO SCAN 2.0: SCAN LICENSE...
SaleBestseller No. 2
Autel Professional OBD2 Scanner AL319 Code Reader, Enhanced Check and Reset Engine Fault Code, Live Data, Freeze Frame, CAN Car Diagnostic Scan Tools for All OBDII Vehicles After 1996, 2026 Upgraded
  • 【TURN OFF CEL】 This AL319 car scanner diagnostic tool...
  • 【EXTENSIVE APPLICATION】 Autel AL319 Compatible with...
  • 【FOR END USER & DIYERS】 This error code reader AL319 is...
  • 【USER-FRIENDLY DESIGN】 This OBD2 scanner and check...
  • 【HIGH-QUALITY SERVICES】 12 months war.ranty from the...

Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API


 


If the PDF is very large, it may not load in the preview below.

Download PDF [573.21 KB]


Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.

If the TSB PDF does not show, download or view it on the NHTSA Website.

Click on the (+) Plus Sign

Then Click on Associated Document(s)


Search NHTSA Database for Recalls

View Latest Recalls


Search NHTSA Database for Vehicle Investigations

View Latest Vehicle Investigations


Search NHTSA Database for Vehicle Complaints

View Latest Vehicle Complaints


TSB/Document ID: Circular-Emissio

Replacement Service Bulletin Number:

MFR Communication Date: 2018-02-19

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

MFR Component System:

MFR Component Subsystem:


Previous TSB

Next TSB



THINKCAR Bidirectional OBD2 Scanner Diagnostic Tool 689BT - All System Scan Tool with Bluetooth 5.0, 3000+ Active Tests,ECU Coding, 34+ Services, FCA, CAN-FD and DoIP, Wireless Update
108 Reviews
THINKCAR Bidirectional OBD2 Scanner Diagnostic Tool 689BT - All System Scan Tool with Bluetooth 5.0, 3000+ Active Tests,ECU Coding, 34+ Services, FCA, CAN-FD and DoIP, Wireless Update
  • [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
  • Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
  • Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
  • 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
  • Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.

Last update on 2026-07-02 / Affiliate links / Images from Amazon Product Advertising API


 

Sale
XTOOL D7S Bidirectional Scan Tool, 2026 AI-Assisted OBD2 Scanner Diagnostic Tool with FCA AutoAuth, All System Car Scanner, 39+ Resets, ECU C0ding, PMI, Upgrade of D7, Crankshaft Relearn, CAN FD/DoIP
334 Reviews
XTOOL D7S Bidirectional Scan Tool, 2026 AI-Assisted OBD2 Scanner Diagnostic Tool with FCA AutoAuth, All System Car Scanner, 39+ Resets, ECU C0ding, PMI, Upgrade of D7, Crankshaft Relearn, CAN FD/DoIP
  • Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCAeBay logo Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU c0ding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations
  • 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCAeBay logo AutoAuth: Now supports FCAeBay logo SGW module for ChryslereBay logo, for JeepeBay logo, for DodgeeBay logo (2018+), for FiateBay logo (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Pr0gramming): Allows for FordeBay logo, for LincolneBay logo, and for MazdaeBay logo ECU pr0gramming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
  • 39+ Services/Resets/Adaptations/Relearns/Calibrations: XTOOL D7S full system car scanner diagnostic tool tackles 99% of common car issues through its 36+ special functions, including Oil Reset, EPB, SAS, BMS, Throttle Reset, Injector C0ding, ABS Bleed, TPMS Reset, Power Balance, etc and also covers specific-vehicle functions like Crank Sensor Relearn, ABS Initialization, Cylinder Power Balance, Fuel Trim Reset, Idle Relearn etc. This car diagnostic scanner enhances efficiency, making repairs and maintenance hassle-free. Tip: DO NOT for All vehicles, please check compatibility first
  • Cost-effective ECU C0ding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMWeBay logo, for Benz and offline for BENZ, for MIT, along with PMI functions for FordeBay logo, for MazdaeBay logo, and for LincolneBay logo. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
  • OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently

Last update on 2026-06-30 / Affiliate links / Images from Amazon Product Advertising API


 

2026 BOSSCOMM IF745 Scanner Diagnostic Tool, Check Engine Code Reader with 6 Resets, ABS Bleeder/Oil/EPB/SAS/Throttle/Battery, Scanner Diagnostic Tool for Vehicles, Lifetime Free Update, Auto VIN
  • 【✅Compared to BOSSCOMM IF742, IF745 Offers Full-System Diagnostics】The BOSSCOMM IF745 car diagnostic scanner is an upgraded model of IF742. In addition to supporting all OBD2 Code Reader functions and 6 reset options (ABS/EPB/SAS/BMS/Oil/Throttle), it expands diagnostics from 4 systems (Check Engine/ABS/SRS/Transmission) to vehicle All systems, including Steering, Suspension, and Body Electronics. This provides deeper, more comprehensive diagnostic capabilities.
  • 【✨10 OBD2 Functions】The BOSSCOMM IF745 scan tool’s DTC Lookup instantly translates fault codes into user-friendly explanations, its I/M Readiness feature streamlines emissions testing with a single tap, and Freeze Frame lets you pinpoint the exact moment of a fault for in-depth root-cause diagnosis. Combined with a live data dashboard and advanced diagnostics (O2S, OBMon, EVAP), it delivers comprehensive insights for confident troubleshooting.
  • 【✨Deep Diagnostics for All Vehicle System Modules】Beyond code reading/clearing and ECU information retrieval, our all-in-one data stream feature lets you inspect all current fault codes and their locations across the vehicle’s systems. This vehicle code reader helps you turn off dashboard warning lights and perform a comprehensive self-check of your car at home—no more back-and-forth trips to the repair shop or hefty inspection fees.
  • 【✨6 Essential Resets: ABS Bleeding, Oil, EPB, SAS, Throttle, BMS】The BOSSCOMM IF745 obd2 scanner diagnostic tool swiftly purges air from brake lines to restore braking sensitivity, fine-tunes maintenance cycles to eliminate false alerts, resolves parking brake issues with one-click control, recalibrates steering sensors for stability, optimizes engine idling/acceleration for smoother performance, and deeply resets battery systems to extend lifespan and range via precise parameter adjustments.❗NOTE: Does NOT support bidirectional control, coding, or programming.​
  • 【✨10,000+ Car Models, AutoVIN, 13 Languages】The BOSSCOMM IF745 vehicle scanner diagnostic tool covers 73+ global car brands and offers support in 13 languages, making it perfect for DIYers, auto mechanics, or as a thoughtful gift. With a single-click AutoVIN feature, it instantly retrieves vehicle serial numbers, streamlining diagnostics for users globally. This adaptable tool balances user-friendliness with precision, catering to both personal and professional requirements.✅Unsure about compatibility? Compatibility will vary on vehicles' model and year, pls reach us via 📧 [email protected] 📧 before purchase.

Last update on 2026-07-02 / Affiliate links / Images from Amazon Product Advertising API


 


This product presentation was made with AAWP plugin.

Share to...