Technical Service Bulletins (TSBs) for the 1992 911 are official communications between Porsche & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    BRAKES (PWS)

    • TSB #No. 1801.4

      Date Announced:
      MAR 30, 2022
      NHTSA ID:
      #10209901

      Advanced technical information for a brake squeal. Read More »

    • TSB #ATIALL41605

      Date Announced:
      MAR 24, 2016
      NHTSA ID:
      #10198525

      Understanding and addressing brake squeal complaints. Read More »

    SERVICE BRAKES, HYDRAULIC

    • TSB #122-L5E2R-04

      Date Announced:
      MAR 01, 2018
      NHTSA ID:
      #10134862

      Subject: Replacing brake booster during repairs Information: If the brake booster on the 911 Carrera 2/Targa/Speedster (964) needs to be replaced, the replacment brake booster will be a 911 (993) version. Read More »

    SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS

    • TSB #GRP4/9310

      Date Announced:
      AUG 01, 1993
      NHTSA ID:
      #39626

      BRAKE VIBRATION DAMPER APPLICATION - NEW DAMPING PLATE WITH STEEL CLIP. *TW Read More »

    ENGINE AND ENGINE COOLING

    • TSB #No. 14-23

      Date Announced:
      JUL 31, 2023
      NHTSA ID:
      #10240439

      Manufacturers certificate for allocation of approved engine oils Read More »

    • TSB #No. 02-23-1

      Date Announced:
      MAR 24, 2023
      NHTSA ID:
      #10233941

      Manufacturers certificate for approved engine C20 engine oils. Read More »

    • TSB #No. 04-23

      Date Announced:
      FEB 13, 2023
      NHTSA ID:
      #10232392

      Overview of approved engine C40 oils for all Porsche models that use C40 oil. Read More »

    • TSB #No. 03-23

      Date Announced:
      FEB 13, 2023
      NHTSA ID:
      #10232391

      Overview of approved engine C30 oils for all Porsche models that use C30 oil. Read More »

    • TSB #No. 05-23

      Date Announced:
      FEB 13, 2023
      NHTSA ID:
      #10232393

      Overview of approved engine A40 oils for all Porsche models that use A40 oil. Read More »

    • TSB #No. 35-22

      Date Announced:
      JUL 30, 2022
      NHTSA ID:
      #10217270

      Overview of approved engine C30 oils for Porsche models using C30 oils. Read More »

    • TSB #No. 36-22

      Date Announced:
      JUL 30, 2022
      NHTSA ID:
      #10217271

      Instructions on the manufacturers certificate for approve Porsche A40 engine oils. Read More »

    • TSB #No. 31-22

      Date Announced:
      JUL 30, 2022
      NHTSA ID:
      #10217275

      Overview of approved engine C40 engine oils for all Porsche models using this oil. Read More »

    • TSB #No. 33-22

      Date Announced:
      JUL 30, 2022
      NHTSA ID:
      #10217276

      Overview of approved engine C20 engine oils for all Porsche models using this oil. Read More »

    • TSB #No. D599

      Date Announced:
      MAR 14, 2022
      NHTSA ID:
      #10209855

      Parts information for parts withdrawal involving the valve spring. Part numbers affected are PAB109623 and 958109623. Read More »

    • TSB #No. 61-21

      Date Announced:
      AUG 31, 2021
      NHTSA ID:
      #10200773

      List of approved engine oils for all Porsche models using C40 oil. Read More »

    • TSB #No. 13-21

      Date Announced:
      MAR 26, 2021
      NHTSA ID:
      #10189886

      List of approved C20 style engine oils for classic and new Porsche models since 1984. Read More »

    • TSB #No. 03-21

      Date Announced:
      MAR 05, 2021
      NHTSA ID:
      #10189698

      List of approved C20 engine oils for all new and classic Porsche models 1984 and newer. Read More »

    • TSB #No. 07-21-1

      Date Announced:
      MAR 05, 2021
      NHTSA ID:
      #10189702

      List of approved C30 engine oils for all new and Classic Porsche vehicles MY1984 and newer. Read More »

    • TSB #No. 08-21

      Date Announced:
      MAR 05, 2021
      NHTSA ID:
      #10189703

      List of approved C40 engine oils for new and classic Porsche vehicles MY 1984 and newer. Read More »

    • TSB #No. 09-21

      Date Announced:
      MAR 05, 2021
      NHTSA ID:
      #10189704

      List of approved A40 style engine oils for new and classic Porsche vehicles MY 1984 and newer. Read More »

    • TSB #No. 53-20

      Date Announced:
      DEC 03, 2020
      NHTSA ID:
      #10185091

      List of approved C40 style engine oils for new and classic Porsche vehicles. Read More »

    • TSB #No. 54-20

      Date Announced:
      DEC 03, 2020
      NHTSA ID:
      #10185093

      List of approved A40 style engine oils for new and classic Porsche models. Read More »

    • TSB #No. 2000

      Date Announced:
      OCT 28, 2020
      NHTSA ID:
      #10182276

      Advanced Technical information on a NVH Lubrication kit. Read More »

    • TSB #122-Z2X7A-02

      Date Announced:
      JAN 30, 2020
      NHTSA ID:
      #10170997

      List of approved C20 engine oils for all Porsche vehicles since 1984. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION

    • TSB #No. 16-23

      Date Announced:
      SEP 05, 2023
      NHTSA ID:
      #10243585

      Manufacturers certificate for an overview of approved Porsche C20 engine oils. Read More »

    • TSB #No. 17-23

      Date Announced:
      SEP 05, 2023
      NHTSA ID:
      #10243586

      Manufacturers certificate for an overview of approved Porsche C30 engine oils. Read More »

    • TSB #No. 18-23

      Date Announced:
      SEP 05, 2023
      NHTSA ID:
      #10243587

      Manufacturers certificate for an overview of approved Porsche C40 engine oils. Read More »

    • TSB #No. 19-23

      Date Announced:
      SEP 05, 2023
      NHTSA ID:
      #10243588

      Manufacturers certificate for an overview of approved Porsche A40 engine oils. Read More »

    FUEL SYSTEM, GASOLINE

    • TSB #No. D615

      Date Announced:
      SEP 19, 2022
      NHTSA ID:
      #10222527

      Parts information for parts withdrawal involving the fuel filler flap Read More »

    POWER TRAIN

    • TSB #No. 2404

      Date Announced:
      MAR 15, 2024
      NHTSA ID:
      #10252578

      Special tools and equipment information for the Boxster, Cayman, 911, and Panamera Read More »

    POWER TRAIN:MANUAL TRANSMISSION

    • TSB #GRP3/9503

      Date Announced:
      APR 01, 1995
      NHTSA ID:
      #39716

      THE FRONT TRANSMISSION CASE COVER AND SPUR GEARS ARE NO LONGER AVAILABLE AS SEPARATE PARTS. *TW Read More »

    ELECTRICAL SYSTEM

    • TSB #No. 2314

      Date Announced:
      SEP 06, 2023
      NHTSA ID:
      #10243597

      Special tools and equipment information for all Porsche models. Diagnostic equipment standards. Read More »

    • TSB #No. 2313

      Date Announced:
      SEP 01, 2023
      NHTSA ID:
      #10243573

      Special tools and equipment information for the Pico Oscilloscope Extended Functionality Read More »

    • TSB #No. 2234

      Date Announced:
      DEC 08, 2022
      NHTSA ID:
      #10229617

      Instructions on advanced technical information for improper odometer and speedometer function Read More »

    • TSB #No. 52-21

      Date Announced:
      APR 19, 2021
      NHTSA ID:
      #10191742

      Information on how to deal with a potential cyber security breach. Read More »

    • TSB #No. D4a

      Date Announced:
      JUN 03, 2020
      NHTSA ID:
      #10176897

      Document showing the evolution of Porsche Vehicles since 1948. Read More »

    • TSB #122-Z3C2E-10

      Date Announced:
      SEP 18, 2019
      NHTSA ID:
      #10165939

      Announcement of new Tech Live look, which will put technicians into live chats with technical support if they should have an urgent issue Read More »

    • TSB #122-L8R6J-10

      Date Announced:
      SEP 06, 2019
      NHTSA ID:
      #10165938

      Bulletin highlighting new updates 38.750, 38.750.000 for the Porsche PIWIS Tester 3 Read More »

    • TSB #122-Z6Y7L-09

      Date Announced:
      AUG 15, 2019
      NHTSA ID:
      #10165167

      Bulletin outlining PIWIS Tester updates 38.600.030 & 035. Read More »

    • TSB #122-E4R8U-09

      Date Announced:
      AUG 07, 2019
      NHTSA ID:
      #10165166

      Bulletin outlining PIWIS Tester updates 38.600.020. Read More »

    • TSB #122-B3Y6H-09

      Date Announced:
      AUG 05, 2019
      NHTSA ID:
      #10165165

      Bulletin outlining PIWIS Tester updates 38.600.000, .010, & .015. Read More »

    ELECTRICAL SYSTEM:SOFTWARE

    • TSB #PIWIS2001v

      Date Announced:
      JUN 25, 2020
      NHTSA ID:
      #10176881

      Information on new PIWIS tester update 39.500.020 and .025. Read More »

    AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE

    • TSB #122-E7M2M-09

      Date Announced:
      AUG 02, 2017
      NHTSA ID:
      #10117498

      Information: Old airbag sensor no longer available. Note: During repairs, the faulty airbag sensor will be replaced by a new electronic airbag sensor. Read More »

    BACK OVER PREVENTION:SOFTWARE

    EQUIPMENT

    • TSB #No. 2404

      Date Announced:
      MAR 15, 2024
      NHTSA ID:
      #10252578

      Special tools and equipment information for the Boxster, Cayman, 911, and Panamera Read More »

    • TSB #PIWIS2302s

      Date Announced:
      NOV 17, 2023
      NHTSA ID:
      #10246417

      Information for PIWIS tester update 42.300.050 & .052 Read More »

    • TSB #PIWIS2302r

      Date Announced:
      NOV 10, 2023
      NHTSA ID:
      #10246374

      Information for PIWIS tester update 42.300.040 & .041 Read More »

    • TSB #PIWIS2302q

      Date Announced:
      NOV 07, 2023
      NHTSA ID:
      #10246372

      Information for PIWIS tester update 42.300.035 Read More »

    • TSB #PIWIS2302p

      Date Announced:
      NOV 03, 2023
      NHTSA ID:
      #10246369

      Information for PIWIS tester update 42.300.030 - .032 Read More »

    • TSB #No. D654

      Date Announced:
      NOV 02, 2023
      NHTSA ID:
      #10246366

      Parts information for parts withdrawal involving the glass roof - 9J0877069EY and 9J0877069DY Read More »

    • TSB #No. D5

      Date Announced:
      AUG 29, 2023
      NHTSA ID:
      #10242140

      Parts information for parts withdrawal on the locks made to original key code Read More »

    • TSB #PIWIS2301as

      Date Announced:
      JUL 25, 2023
      NHTSA ID:
      #10240414

      Information for PIWIS tester update 42.100.000, .010 & .011 Read More »

    • TSB #PIWIS2301ap

      Date Announced:
      JUL 07, 2023
      NHTSA ID:
      #10240374

      Information for PIWIS tester update 42.000.040 Read More »

    • TSB #PIWIS2301ao

      Date Announced:
      JUL 04, 2023
      NHTSA ID:
      #10240352

      Information for PIWIS tester update 42.000.035 Read More »

    • TSB #No. 2311

      Date Announced:
      JUN 22, 2023
      NHTSA ID:
      #10238776

      Special tools information on an upgrade to the pushers for the VAS5237 Read More »

    • TSB #No. D4a

      Date Announced:
      MAR 16, 2023
      NHTSA ID:
      #10233920

      Product knowledge for the Porsche evolution from 1948-2023. Read More »

    • TSB #PIWIS2301k

      Date Announced:
      FEB 27, 2023
      NHTSA ID:
      #10232442

      Information for PIWIS tester update 41.750.045 & .046 Read More »

    • TSB #PIWIS2202b

      Date Announced:
      NOV 18, 2022
      NHTSA ID:
      #10227379

      Information for PIWIS tester update 41.500.020 & .022 Read More »

    • TSB #No. 2221

      Date Announced:
      NOV 11, 2022
      NHTSA ID:
      #10227337

      Special tools information for the 9282 supersedes to the PNA9282NAR. Read More »

    • TSB #PIWIS2201au

      Date Announced:
      SEP 30, 2022
      NHTSA ID:
      #10222550

      Information for PIWIS tester update 41.400.000 & .010. Read More »

    • TSB #PIWIS2201at

      Date Announced:
      SEP 26, 2022
      NHTSA ID:
      #10222545

      Information for PIWIS tester update #41.375.050 Read More »

    • TSB #PIWIS2201as

      Date Announced:
      SEP 22, 2022
      NHTSA ID:
      #10222533

      Information for PIWIS tester update #41.375.045. Read More »

    • TSB #No. D615

      Date Announced:
      SEP 19, 2022
      NHTSA ID:
      #10222527

      Parts information for parts withdrawal involving the fuel filler flap Read More »

    • TSB #PIWIS2201ar

      Date Announced:
      SEP 16, 2022
      NHTSA ID:
      #10222515

      Information for PIWIS tester update #41.375.040 Read More »

    • TSB #PIWIS2201an

      Date Announced:
      AUG 26, 2022
      NHTSA ID:
      #10219459

      Information for PIWIS tester update #41.300.000, .010 & .012 Read More »

    • TSB #No. 2002.1

      Date Announced:
      AUG 19, 2022
      NHTSA ID:
      #10219403

      Special tools information for new blitz table replacement castors. Read More »

    • TSB #No. 2214

      Date Announced:
      JUL 27, 2022
      NHTSA ID:
      #10217266

      Special tools and equipment for the VAG 1561 storage kit in foam with blades Read More »

    • TSB #No. 2116

      Date Announced:
      OCT 26, 2021
      NHTSA ID:
      #10203103

      Special tools information for a new contact surface cleaning set. Read More »

    • TSB #No. 61-21

      Date Announced:
      AUG 31, 2021
      NHTSA ID:
      #10200773

      List of approved engine oils for all Porsche models using C40 oil. Read More »

    • TSB #No. D13.2

      Date Announced:
      JUN 02, 2021
      NHTSA ID:
      #10198802

      Information on new PIWIS Tester program for independent repair facilities. Read More »

    • TSB #No. 13-21

      Date Announced:
      MAR 26, 2021
      NHTSA ID:
      #10189886

      List of approved C20 style engine oils for classic and new Porsche models since 1984. Read More »

    • TSB #PIWIS2102j

      Date Announced:
      MAR 05, 2021
      NHTSA ID:
      #10189696

      Information on PIWIS Tester update 40.000.020 & .022. Read More »

    • TSB #No. 54-20

      Date Announced:
      DEC 03, 2020
      NHTSA ID:
      #10185093

      List of approved A40 style engine oils for new and classic Porsche models. Read More »

    • TSB #PIWIS2001v

      Date Announced:
      JUN 25, 2020
      NHTSA ID:
      #10176881

      Information on new PIWIS tester update 39.500.020 and .025. Read More »

    • TSB #No. D4a

      Date Announced:
      JUN 03, 2020
      NHTSA ID:
      #10176897

      Document showing the evolution of Porsche Vehicles since 1948. Read More »

    • TSB #122-J4L4X-03

      Date Announced:
      FEB 27, 2020
      NHTSA ID:
      #10172096

      Bulletin outlining new blitz table replacement castors due to a high rate of failure reported by dealers. Read More »

    • TSB #ATIALL41605

      Date Announced:
      MAR 24, 2016
      NHTSA ID:
      #10198525

      Understanding and addressing brake squeal complaints. Read More »

    EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES

    • TSB #No. D5

      Date Announced:
      AUG 29, 2023
      NHTSA ID:
      #10242140

      Parts information for parts withdrawal on the locks made to original key code Read More »

    EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #No. 32-23

      Date Announced:
      NOV 14, 2023
      NHTSA ID:
      #10246384

      Instructions on manufacturers certificate for approved C20 engine oils Read More »

    • TSB #No. 35-23

      Date Announced:
      NOV 14, 2023
      NHTSA ID:
      #10246387

      Instructions on manufactures certificate for approved Porsche A40 engine oils Read More »

    • TSB #No. 33-23

      Date Announced:
      NOV 14, 2023
      NHTSA ID:
      #10246385

      Instructions on manufactures certificate for approved Porsche C30 engine oils Read More »

    • TSB #PIWIS2302h

      Date Announced:
      OCT 05, 2023
      NHTSA ID:
      #10244982

      Special tools and equipment information on PIWIS tester update 42.250.050 Read More »

    • TSB #PIWIS2302g

      Date Announced:
      SEP 29, 2023
      NHTSA ID:
      #10243631

      Information on PIWIS tester update 42.250.045 Read More »

    • TSB #PIWIS2302f

      Date Announced:
      SEP 25, 2023
      NHTSA ID:
      #10243630

      Information on PIWIS tester update 42.250.042 Read More »

    • TSB #PIWIS2302e

      Date Announced:
      SEP 22, 2023
      NHTSA ID:
      #10243625

      Information PIWIS tester update 42.250.040 Read More »

    • TSB #PIWIS2302d

      Date Announced:
      SEP 19, 2023
      NHTSA ID:
      #10243617

      Information on PIWIS tester update 42.250.032 Read More »

    • TSB #PIWIS2302C

      Date Announced:
      SEP 14, 2023
      NHTSA ID:
      #10243616

      Information on PIWIS tester update 42.250.030 Read More »

    • TSB #PIWIS2302b

      Date Announced:
      SEP 12, 2023
      NHTSA ID:
      #10243615

      Information on PIWIS tester update 42.200.025 Read More »

    • TSB #PIWIS2302a

      Date Announced:
      SEP 08, 2023
      NHTSA ID:
      #10243598

      Information on PIWIS tester update 42.200.020 & .022 Read More »

    • TSB #PIWIS2301az

      Date Announced:
      SEP 05, 2023
      NHTSA ID:
      #10243576

      Information on PIWIS tester update 42.200.000 a?? 42.200.012 Read More »

    • TSB #No. 17D4a

      Date Announced:
      DEC 06, 2022
      NHTSA ID:
      #10229611

      The following illustrations are based on the four poster set "Evolution Porsche 1948-2006". Read More »

    • TSB #No. D4a

      Date Announced:
      MAR 30, 2021
      NHTSA ID:
      #10189921

      Historical information on Porsche product evolution. Read More »

    • TSB #Charging lockup

      Date Announced:
      JUN 19, 2020
      NHTSA ID:
      #10176905

      Info on a new customer tool for looking up campaigns and recalls on their vehicle. Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #No. 2303

      Date Announced:
      FEB 14, 2023
      NHTSA ID:
      #10232416

      Special tools information for the pneumatic cartridge gun. Read More »

    • TSB #No. 1758.4

      Date Announced:
      NOV 30, 2022
      NHTSA ID:
      #10227393

      Special tools information for the logo templates and exchangeable inserts. Read More »

    • TSB #No. 1804.1

      Date Announced:
      AUG 30, 2022
      NHTSA ID:
      #10219463

      Instructions on advanced technical information for the lubricant for the sunroof/sliding roof. Read More »

    EQUIPMENT:APPLIANCE:AIR CONDITIONER

    • TSB #122-V3B6B-07

      Date Announced:
      JUN 19, 2019
      NHTSA ID:
      #10162219

      Announcement of a 6 month warranty extension on VAS 581005P R1234yf Service Units for air conditioning. Read More »

    • TSB #122-W9D2T-07

      Date Announced:
      JUN 10, 2019
      NHTSA ID:
      #10162214

      Instructions for using VAS 581005P in order to chech and service R1234yf Air Conditioning Unit. Read More »

    UNKNOWN OR OTHER

    • TSB #PK-D8-16

      Date Announced:
      MAR 02, 2011
      NHTSA ID:
      #10038544

      PORSCHE: INFORMATION ON HOW TO READ THE VIN. *RM Read More »

    • TSB #0203

      Date Announced:
      AUG 16, 2002
      NHTSA ID:
      #10010766

      EXCHANGE ENGINES AND TRANSMISSIONS FOR WARRANTY. THIS BULLETIN REPLACES BULLETIN WTY0203 DATED 2-15-02. *TT Read More »