Removed text is struck through; added text is highlighted.
Diagnostics
Porsche’s diagnostic history includes the early 9268 reader, the 9288 Hammer, System Tester 2, and successive PIWIS testers. Porsche-specific software and hardware must be distinguished from general Bosch multi-make equipment and owner-converted devices.
The documented Bosch links include the 9288 and KTS 300 family, PST2 and KTS 500, and PIWIS I and KTS 650. PIWIS II uses a laptop and separate vehicle communication interface. Porsche service documents identify PIWIS Tester 4 by 2024–25.
Testers and software
Porsche 9288 and System Tester 1Porsche System Tester 2Porsche PIWIS Tester IPorsche PIWIS Tester IIPorsche PIWIS Tester IIIPorsche PIWIS Tester 4Porsche and Bosch tester hardware relationships
The linked Porsche history includes photographs of multiple generations. An original Porsche unit can have a different colour or fascia from a green Bosch unit, but colour alone does not prove authenticity or functionality.
Photographs and screenshots
Porsche-labelled System Tester 2 with version 22.0 of Porsche control-module diagnosis on screen. Source: Porsche RJ. Licence: permission for this use confirmed by the wiki operator.Porsche-labelled grey PIWIS Tester I, a hardware relative of the Bosch KTS 650. Source: Porsche RJ. Licence: permission for this use confirmed by the wiki operator.
Porsche RJ illustrated 9288, PST2 and PIWIS history
Related pages
Bosch DiagnosticsBosch KTS diagnostic testers
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
Porsche RJ: evolution of Porsche diagnostic systems. Porsche RJ; Portuguese, illustrated history. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.Durametric: history of Porsche diagnostic tools. Durametric; historical account and equipment photographs. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.Porsche service technical information: PIWIS Tester 4. Porsche Cars North America, 2025; hosted by NHTSA. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.
Rendered revisions
Open each version to inspect formatting, tables and photographs.
Porsche’s diagnostic history includes the early 9268 reader, the 9288 Hammer, System Tester 2, and successive PIWIS testers. Porsche-specific software and hardware must be distinguished from general Bosch multi-make equipment and owner-converted devices.
The documented Bosch links include the 9288 and KTS 300 family, PST2 and KTS 500, and PIWIS I and KTS 650. PIWIS II uses a laptop and separate vehicle communication interface. Porsche service documents identify PIWIS Tester 4 by 2024–25.
The linked Porsche history includes photographs of multiple generations. An original Porsche unit can have a different colour or fascia from a green Bosch unit, but colour alone does not prove authenticity or functionality.
Porsche’s diagnostic history includes the early 9268 reader, the 9288 Hammer, System Tester 2, and successive PIWIS testers. Porsche-specific software and hardware must be distinguished from general Bosch multi-make equipment and owner-converted devices.
The documented Bosch links include the 9288 and KTS 300 family, PST2 and KTS 500, and PIWIS I and KTS 650. PIWIS II uses a laptop and separate vehicle communication interface. Porsche service documents identify PIWIS Tester 4 by 2024–25.
The linked Porsche history includes photographs of multiple generations. An original Porsche unit can have a different colour or fascia from a green Bosch unit, but colour alone does not prove authenticity or functionality.
Photographs and screenshots
Porsche-labelled System Tester 2 with version 22.0 of Porsche control-module diagnosis on screen. Source: Porsche RJ. Licence: permission for this use confirmed by the wiki operator.Porsche-labelled grey PIWIS Tester I, a hardware relative of the Bosch KTS 650. Source: Porsche RJ. Licence: permission for this use confirmed by the wiki operator.
