VW OBD2 Pinout: Your Comprehensive Guide to Volkswagen Diagnostic Ports

The On-Board Diagnostics II (OBD2) system is a standardized system used in most modern vehicles, including Volkswagen (VW). It provides access to crucial vehicle data for diagnostics and monitoring. Understanding the Vw Obd2 Pinout is essential for mechanics, technicians, and even car enthusiasts who want to diagnose and troubleshoot VW vehicles effectively. This guide will provide a detailed look at the VW OBD2 pinout, explaining each pin’s function and its importance in vehicle diagnostics, along with a compatibility list for various VW models.

Understanding the OBD2 Connector

The OBD2 system utilizes a standardized 16-pin Diagnostic Link Connector (DLC). This connector is usually located within the passenger compartment of the vehicle, often under the dashboard on the driver’s side. This standardization ensures that diagnostic tools can be universally used across different makes and models of vehicles that adhere to the OBD2 standard. For Volkswagen vehicles, the OBD2 port is the gateway to accessing a wealth of information about the engine, transmission, emissions systems, and other critical components. Knowing the vw obd2 pinout allows for correct connection and communication with these systems.

VW OBD2 Pinout Diagram and Description

Below is the standard OBD2 pinout used in Volkswagen vehicles. This pinout dictates the function of each of the 16 pins in the connector, ensuring proper communication between the vehicle’s computer systems and diagnostic tools.

Pin Signal Description
1 IGN Switched +12V power when the ignition is ON
2 J1850 Bus+ SAE J1850 VPW and PWM bus (+) – Primarily Ford
3 Not assigned/Manufacturer Discretion
4 CGND Chassis Ground
5 SGND Signal Ground
6 CAN High CAN bus high (ISO 15765-4 and SAE J2284)
7 K-LINE K-line of ISO 9141-2 and ISO/DIS 14230-4 (KWP2000)
8 Not assigned/Manufacturer Discretion
9 Not assigned/Manufacturer Discretion
10 J1850 Bus- SAE J1850 VPW and PWM bus (-) – Primarily Ford
11 Not assigned/Manufacturer Discretion
12 Not assigned/Manufacturer Discretion
13 Not assigned/Manufacturer Discretion
14 CAN Low CAN bus low (ISO 15765-4 and SAE J2284)
15 ISO 9141-2 L-LINE L-line of ISO 9141-2 and ISO/DIS 14230-4 (KWP2000)
16 +12V Battery Power (+12V)

Understanding the Pin Functions:

  • Pin 1 (IGN): This pin provides switched power, meaning it’s only active when the vehicle’s ignition is turned on. This can be used by some diagnostic tools for power, but it’s not always consistently used.

  • Pin 2 & 10 (J1850 Bus+ and Bus-): These pins are for the SAE J1850 communication protocol, which was primarily used by Ford and some older GM vehicles. While listed in the standard OBD2 pinout, they are generally not used in VW vehicles. VW typically utilizes other protocols.

  • Pin 4 (CGND) & 5 (SGND): These are ground pins. Pin 4 is Chassis Ground, connected to the vehicle’s metal body, providing a common ground reference. Pin 5 is Signal Ground, used as a ground reference for the communication signals to minimize electrical noise and ensure signal integrity.

  • Pin 6 (CAN High) & 14 (CAN Low): These are crucial for modern VW diagnostics. They are part of the CAN (Controller Area Network) bus, which is the backbone of communication in most modern vehicles. CAN bus is a high-speed communication protocol that allows various electronic control units (ECUs) in the car to communicate with each other and with external diagnostic tools. This is a primary protocol for diagnostics in post-2000 VW models.

  • Pin 7 (K-LINE) & 15 (ISO 9141-2 L-LINE): These pins are used for the ISO 9141-2 and ISO 14230-4 (KWP2000) protocols. K-line is a single-wire communication protocol, and L-line was sometimes used for wake-up or as a secondary communication line. These protocols were common in older OBD2 compliant VWs, particularly in the late 1990s and early 2000s, before CAN bus became dominant. While the table notes “Not used?”, K-line was used in many VW models of that era.

  • Pin 16 (+12V): This pin provides direct battery power to the diagnostic tool. Many OBD2 scanners and tools draw power from this pin, eliminating the need for a separate power source.

Understanding this vw obd2 pinout is the first step in effectively diagnosing your Volkswagen. Correctly identifying these pins ensures proper connection with diagnostic equipment and accurate data retrieval.

Volkswagen OBD2 Compatibility List

It’s important to note that OBD2 compliance became mandatory in the USA for vehicles manufactured from 1996 onwards. In Europe, the adoption was phased in, becoming mandatory for gasoline vehicles in 2001 and diesel vehicles in 2004. However, even within the OBD2 era, different communication protocols were used. Below is a compatibility list for various Volkswagen models, outlining the OBD2 protocols they utilize. This list is not exhaustive but provides a good overview.

Model Engine Year (starting from) OBD-2 Protocol
Volkswagen Amarok 2.0 TDi, Diesel (163HP) 2010 CAN 11bit (500kb)
Volkswagen Beetle 2000 ISO 14230-4, ISO 9141-2
Volkswagen Bora 1999 ISO 14230-4, ISO 9141-2
Volkswagen Bora Gasoline (100 HP) 1999 KW 1281
Volkswagen Bora 1.9 TDI-PD AJM, Diesel (114 HP) 1999 ISO 9141-2
Volkswagen Bora 2.0 Highline, Gasoline (114 HP) 1999 KW 1281
Volkswagen Bora V5, Gasoline (148 HP) 1999 KW 1281
Volkswagen Bora Gasoline (114 HP) 2000
Volkswagen Bora Diesel (135 HP) 2001 ISO 9141-2
Volkswagen Bora Diesel (129 HP) 2001 KW 1281
Volkswagen Bora 1J2, Gasoline (168 HP) 2001 KW 1281
Volkswagen Bora 1.9 tdi, Diesel (100HP) 2001 ISO 9141
Volkswagen Bora 1.9 tdi, Diesel (115HP) 2001 ISO 9141
Volkswagen Bora 1.6, Gasoline (105HP) 2002 ISO 9141
Volkswagen Bora Variant Gasoline (100 HP) 1999 KW 1281
Volkswagen Caddy 1.9 AEY, Diesel (64 HP) 1995 KW 1281
Volkswagen Caddy Gasoline (60 HP) 1998 KW 1281
Volkswagen Caddy 2.0 SDI, Diesel (70HP) 2004 CAN 11bit (500kb)
Volkswagen Caddy 1.9 tdi, Diesel (105HP) 2006 CAN 11bit (500kb)
Volkswagen Caddy 1.9 TDi, Diesel (105HP) 2008 KWP SLOW
Volkswagen Caddy 2.0 TDi, Diesel (105HP) 2010 CAN 11bit (500kb)
Volkswagen Caddy Famely 1.6, Gasoline (102 HP) 2007
Volkswagen Caddy Life Diesel (74 HP) 2006
Volkswagen California 2.5 TDi, Diesel (130HP) 2007 KWP SLOW
Volkswagen Caravelle Gasoline (109 HP) 1997
Volkswagen Caravelle Diesel (86 HP) 1999 KW 1281
Volkswagen Corrado Gasoline (188 HP) 1992 KW 1281
Volkswagen Corrado Gasoline (135 HP) 1993 KW 1281
Volkswagen Corrado Gasoline (114 HP) 1994
Volkswagen Crafter 2.5 DTI, Diesel (136HP) 2007 CAN 11bit (500kb)
Volkswagen Crafter 2.5, Diesel (109HP) 2008 CAN 11bit (500kb)
Volkswagen Eos 2.0 tdi, Diesel (140HP) 2006 CAN 11bit (500kb)
Volkswagen Eos 2.0 FSI, Gasoline (150HP) 2006 KWP SLOW
Volkswagen Eurovan Camper 1997 ISO 14230-4, ISO 9141-2
Volkswagen Fox Gasoline (74 HP) 2005
Volkswagen Fox Gasoline (74 HP) 2005 ISO 9141-2
Volkswagen Fox Diesel (90 HP) 2005 ISO 14230-4, ISO 9141-2
Volkswagen Fox Gasoline (74 HP) 2005
Volkswagen Fox Gasoline (54 HP) 2005 ISO 9141-2
Volkswagen FSI Gasoline (114 HP) 2008 ISO 9141-2
Volkswagen Golf Gasoline (94 HP) 1993
Volkswagen Golf Gasoline (89 HP) 1994
Volkswagen Golf 1HX0, Gasoline (60 HP) 1994 KW 1281
Volkswagen Golf 1997 ISO 14230-4, ISO 9141-2
Volkswagen Golf 1998 ISO 14230-4, ISO 9141-2
Volkswagen Golf 1.6 16V, Gasoline (104 HP) 2000 ISO 9141-2
Volkswagen Golf 1.8T GTI (AGU), Gasoline (148 HP) 2000 KW 1281
Volkswagen Golf TDI, Diesel (121 HP) 2000
Volkswagen Golf 2001 ISO 14230-4, ISO 9141-2
Volkswagen Golf TDI, Diesel (175 HP) 2002
Volkswagen Golf Diesel (74 HP) 2005 ISO 9141-2
Volkswagen Golf 2.0 TDI, Diesel (139 HP) 2008 CAN
Volkswagen Golf 3 1.9TDI 1Z , Diesel (89 HP) 1992 KW 1281
Volkswagen Golf 3 Gasoline (74 HP) 1994
Volkswagen Golf 3 Gasoline (60 HP) 1994 KW 1281
Volkswagen Golf 3 Gasoline (89 HP) 1994
Volkswagen Golf 3 TDI 1Z, Diesel (89 HP) 1994 KW 1281
Volkswagen Golf 3 Diesel (64 HP) 1995
Volkswagen Golf 3 Gasoline (74 HP) 1995 KW 1281
Volkswagen Golf 3 Gasoline (89 HP) 1995 KW 1281
Volkswagen Golf 3 Gasoline (89 HP) 1995 KW 1281
Volkswagen Golf 3 Gasoline (74 HP) 1995 KW 1281
Volkswagen Golf 3 (Typ 1H), Gasoline (74 HP) 1995
Volkswagen Golf 3 1.6 (AEA), Gasoline (74 HP) 1995
Volkswagen Golf 3 1.9 SDI, Diesel (64 HP) 1995 KW 1281
Volkswagen Golf 3 1HX0, Gasoline (60 HP) 1995 KW 1281
Volkswagen Golf 3 1HX0 AEX 1.4l, Gasoline (60 HP) 1995 KW 2000 VAG
Volkswagen Golf 3 Gasoline (114 HP) 1997
Volkswagen Golf 3 Gasoline (100 HP) 1997 KW 1281
Volkswagen Golf 3 Gasoline (116 HP) 1997 KW 1281
Volkswagen Golf 3 Gasoline (100 HP) 1997 KW 1281
Volkswagen Golf 3 Gasoline (74 HP) 1997 KW 1281
Volkswagen Golf 3 Diesel (89 HP) 1997 KW 1281
Volkswagen Golf 3 Gasoline (89 HP) 1997 KW 1281
Volkswagen Golf 3 1.8l AAM, Gasoline (74 HP) 1997 KW 1281
Volkswagen Golf 3 1.9TDI AFN, Diesel (109 HP) 1997 KW 1281
Volkswagen Golf 3 1.9 TDi, Diesel (110HP) 1997 ISO 9141
Volkswagen Golf 3 Diesel (89 HP) 1998 KW 1281
Volkswagen Golf 3 2, Gasoline (115HP) 1998 KWP FAST
Volkswagen Golf 3 1.9 TDi, Diesel (90HP) 2000 KWP FAST
Volkswagen Golf 3 1.9 tdi, Diesel (135HP) 2002 ISO 9141
Volkswagen Golf 3 1.9 TDi, Diesel (150HP) 2003 ISO 9141
Volkswagen Golf 3 Cabrio TDI, Diesel (89 HP) 1995 KW 1281
Volkswagen Golf 3 Cabrio Gasoline (89 HP) 1996 KW 1281
Volkswagen Golf 3 Cabrio 1,6 AFT, Gasoline (100 HP) 1998 KW 1281
Volkswagen Golf 3 GL Gasoline (89 HP) 1991 KW 1281
Volkswagen Golf 3 GL Mexico Gasoline (89 HP) 1995 KW 1281
Volkswagen Golf 3 GT Gasoline (100 HP) 1995 KW 1281
Volkswagen Golf 3 GTI 16V, Gasoline (148 HP) 1995 KW 1281
Volkswagen Golf 3 GTI 8V, Gasoline (114 HP) 1995
Volkswagen Golf 3 Variant Gasoline (89 HP) 1995 KW 1281
Volkswagen Golf 3 Variant Gasoline (89 HP) 1995 KW 1281
Volkswagen Golf 3 Variant Gasoline (89 HP) 1995 KW 1281
Volkswagen Golf 3 Variant Diesel (89 HP) 1997
Volkswagen Golf 3 Variant Gasoline (100 HP) 1997 KW 1281
Volkswagen Golf 3 Variant Gasoline (100 HP) 1998 KW 1281
Volkswagen Golf 3 Variant TDI, Diesel (89 HP) 1998
Volkswagen Golf 3 Variant TDI, Diesel (89 HP) 1998 KW 1281
Volkswagen Golf 3 Variant Gasoline (74 HP) 1995 KW 1281
Volkswagen Golf 4 Gasoline (74 HP) 1997 KW 1281
Volkswagen Golf 4 Gasoline (100 HP) 1998 ISO 9141-2
Volkswagen Golf 4 1,4 16v, Gasoline (74 HP) 1998 ISO 9141-2
Volkswagen Golf 4 Gasoline (124 HP) 1999
Volkswagen Golf 4 Gasoline (100 HP) 1999 KW 1281
Volkswagen Golf 4 1.8, Gasoline (124 HP) 1999 KW 1281
Volkswagen Golf 4 1.9 TDi, Diesel (110HP) 1999 ISO 9141
Volkswagen Golf 4 Gasoline (104 HP) 2000
Volkswagen Golf 4 1.9 TDi, Diesel (115HP) 2000 ISO 9141
Volkswagen Golf 4 Diesel (100 HP) 2001
Volkswagen Golf 4 Diesel (136 HP) 2001 ISO 14230-4
Volkswagen Golf 4 1.4 16S, Gasoline (75HP) 2001 ISO 9141
Volkswagen Golf 4 1.9 TDi, Diesel (90HP) 2001 ISO 9141
Volkswagen Golf 4 Gasoline (148 HP) 2002 KW 1281
Volkswagen Golf 4 1.4 16s, Gasoline (75HP) 2002 ISO 9141
Volkswagen Golf 4 1.6 16V, Gasoline (105HP) 2002 ISO 9141
Volkswagen Golf 4 Gasoline (74 HP) 2003 KW 1281
Volkswagen Golf 4 TDI Variant, Diesel (100 HP) 2003 ISO 9141-2
Volkswagen Golf 4 1.9 TDi, Diesel (101HP) 2003 ISO 9141
Volkswagen Golf 4 1.9 tdi, Diesel (130HP) 2003 ISO 9141
Volkswagen Golf 4 1.9 TDi, Diesel (90HP) 2006 KWP SLOW
Volkswagen Golf 4 1.9 TDi, Diesel (105HP) 2006 KWP SLOW
Volkswagen Golf 4 Variant 1,6 16V Motor AZD, Gasoline (104 HP) 2001 KW 1281
Volkswagen Golf 4 Variant Gasoline (100 HP) 2001 ISO 9141-2
Volkswagen Golf 4 Variant TDI, Diesel (129 HP) 2001 KW 1281
Volkswagen Golf 4 Variant TDI, Diesel (100 HP) 2005 KW 1281
Volkswagen Golf 4 Variant Gasoline (100 HP) 2005 KW 1281
Volkswagen Golf 5 Diesel (104 HP) 2004
Volkswagen Golf 5 1.9 tdi, Diesel (105HP) 2004 KWP SLOW
Volkswagen Golf 5 1.6 FSI, Gasoline (115HP) 2004 KWP SLOW
Volkswagen Golf 5 2.0 TDi, Diesel (140HP) 2004 CAN 11bit (500kb)
Volkswagen Golf 5 2.0 fsi, Gasoline (200HP) 2005 KWP SLOW
Volkswagen Golf 5 2.0 TDi, Diesel (170HP) 2008 CAN 11bit (500kb)
Volkswagen Golf 6 2.0 tdI, Diesel (110HP) 2009 CAN 11bit (500kb)
Volkswagen Golf 6 1.6 TDi, Diesel (105HP) 2010 CAN 11bit (500kb)
Volkswagen Golf 6 1.4 TSI, Gasoline (122HP) 2011 CAN 11bit (500kb)
Volkswagen Golf GL 1996 ISO 14230-4, ISO 9141-2
Volkswagen Golf GTI Gasoline (148 HP) 1998 KW 1281
Volkswagen Golf 5 Gasoline (101 HP) 2005 ISO 14230-4, ISO 9141-2
Volkswagen Golf 5 1,6l , Gasoline (101 HP) 2006
Volkswagen Golf 5 TSI, Gasoline (139 HP) 2006 CAN
Volkswagen Golf 5 TSI, Gasoline (139 HP) 2006 CAN
Volkswagen Golf 5 TSI, Gasoline (139 HP) 2006 CAN
Volkswagen Golf 5 Variant Diesel (104 HP) 2008 KW 1281
Volkswagen Golf 6 Diesel (109 HP) 2008 CAN
Volkswagen Golf 6 FSI, Gasoline (121 HP) 2008 CAN
Volkswagen Golf 6 Gasoline (80 HP) 2009 KW 2000 VAG
Volkswagen Golf 6 1.2, Gasoline (80 HP) 2009 KW 2000 VAG
Volkswagen Golf VR6 Gasoline (172 HP) 1995
Volkswagen Jetta 1997 ISO 14230-4, ISO 9141-2
Volkswagen Jetta 2002 ISO 14230-4, ISO 9141-2
Volkswagen Jetta 2.0 TDi, Diesel (185HP) 2006 KWP SLOW
Volkswagen Jetta 1.9 tdI, Diesel (105HP) 2007 KWP SLOW
Volkswagen Jetta Gasoline (148 HP) 2005
Volkswagen Jetta Wagon 2003 ISO 14230-4, ISO 9141-2
Volkswagen Kafer 1600i, Gasoline (46 HP) 1997 ISO 9141-2
Volkswagen Lupo (1,0l ANV) , Gasoline (50 HP) 1999 KW 1281
Volkswagen Lupo (1,0l ANV) , Gasoline (50 HP) 1999 ISO 9141-2
Volkswagen Lupo 1.0l, Gasoline (50 HP) 1999
Volkswagen Lupo (1,0l AUC), Gasoline (53 HP) 2000 KW 1281
Volkswagen Lupo 1.4L, Diesel (75HP) 2000 ISO 9141
Volkswagen Lupo Diesel (60 HP) 2001 KW 1281
Volkswagen Lupo 1,2 TDI 3L AYZ, Diesel (61 HP) 2001 ISO 9141-2
Volkswagen Lupo Gasoline (74 HP) 2003 ISO 9141-2
Volkswagen Lupo Gasoline (74 HP) 2003 ISO 9141-2
Volkswagen Lupo Gasoline (74 HP) 2003 ISO 9141-2
Volkswagen Lupo 1.4, Gasoline (58 HP) 2004 KW 1281
Volkswagen Lupo 1,0l ANV), Gasoline (50 HP) 1999 ISO 14230-4, ISO 9141-2
Volkswagen Lupo Gasoline (60 HP) 2004 KW 1281
Volkswagen Lupo 3L 1,2TDI, Diesel (61 HP) 1999 KW 1281
Volkswagen Lupo 3L Diesel (61 HP) 2000 KW 1281
Volkswagen Lupo 3L Diesel (61 HP) 2000 KW 1281
Volkswagen Lupo 3L Diesel (61 HP) 2000 KW 1281
Volkswagen Lupo 3L 1.2 TDI, Diesel (61 HP) 2000 KW 1281
Volkswagen Lupo 3L Diesel (61 HP) 2003 ISO 14230-4, ISO 9141-2
Volkswagen Lupo FSI (ARR) Gasoline (104 HP) 2001 ISO 9141-2
Volkswagen Multivan Gasoline (202 HP) 2001
Volkswagen Multivan Diesel (129 HP) 2006 KW 1281
Volkswagen New beetle 1.8 Turbo, Gasoline (150HP) 2000 ISO 9141
Volkswagen New beetle Gasoline (114 HP) 2001
Volkswagen New beetle 1.6 SR, Gasoline (105HP) 2001 ISO 9141
Volkswagen New beetle Gasoline (97 HP) 2002 KW 1281
Volkswagen New beetle 1.9 TDi, Diesel (90HP) 2002 ISO 9141
Volkswagen New beetle Diesel (100 HP) 2006 ISO 9141-2
Volkswagen New beetle 1.6, Gasoline (102HP) 2010 ISO 9141
Volkswagen New Beetle Cabriolet 1,6l, Gasoline (101 HP) 2003 ISO 9141-2
Volkswagen Passat Gasoline (89 HP) 1990
Volkswagen Passat Gasoline (89 HP) 1994 KW 1281
Volkswagen Passat TDI, Diesel (135 HP) 1994
Volkswagen Passat Gasoline (100 HP) 1995
Volkswagen Passat Diesel (109 HP) 1995 KW 1281
Volkswagen Passat 1996 ISO 14230-4, ISO 9141-2
Volkswagen Passat 1997 ISO 14230-4, ISO 9141-2
Volkswagen Passat Diesel (89 HP) 1998 KW 1281
Volkswagen Passat Gasoline (148 HP) 1998
Volkswagen Passat Gasoline (191 HP) 1998
Volkswagen Passat 1.9 TDi, Diesel (110HP) 1998 ISO 9141
Volkswagen Passat 1999 ISO 14230-4, ISO 9141-2
Volkswagen Passat V6 TDI, Diesel (148 HP) 1999 KW 1281
Volkswagen Passat 1.8 20v, Gasoline (95HP) 1999 ISO 9141
Volkswagen Passat 2.5 TDi, Diesel (150HP) 1999 ISO 9141
Volkswagen Passat Diesel (109 HP) 2000
Volkswagen Passat Gasoline (124 HP) 2000 KW 2000 VAG
Volkswagen Passat 1.9 TDi, Diesel (115HP) 2000 ISO 9141
Volkswagen Passat Gasoline (191 HP) 2001
Volkswagen Passat 1.9 TDI Variant (3BG), Diesel (100 HP) 2001 KW 1281
Volkswagen Passat 2.0, Gasoline (168 HP) 2001
Volkswagen Passat 1.9 TDi, Diesel (105HP) 2001 ISO 9141
Volkswagen Passat 1.9 tdi, Diesel (130HP) 2001 ISO 9141
Volkswagen Passat 2.5l v6, Diesel (150HP) 2001 ISO 9141
Volkswagen Passat 1.8 Turbo, Gasoline (170HP) 2001 ISO 9141
Volkswagen Passat Diesel (100 HP) 2002
Volkswagen Passat Gasoline (148 HP) 2002
Volkswagen Passat 1.9 TDI PD, Diesel (100 HP) 2002 KW 1281
Volkswagen Passat 1.9 TDI PD Kombi, Diesel (100 HP) 2002 KW 1281
Volkswagen Passat 2003 ISO 14230-4, ISO 9141-2
Volkswagen Passat Gasoline (129 HP) 2003
Volkswagen Passat 1.9 TDi, Diesel (90HP) 2003 ISO 9141
Volkswagen Passat 1.9TDI Kombi (3BG), Diesel (100 HP) 2004 KW 1281
Volkswagen Passat 1.9 tdi, Diesel (105HP) 2005 CAN 11bit (500kb)
Volkswagen Passat 1.9 TDi, Diesel (130HP) 2005 ISO 9141
Volkswagen Passat 2.0 tdi, Diesel (140HP) 2005 CAN 11bit (500kb)
Volkswagen Passat 1.9 tdi, Diesel (90HP) 2006 CAN 11bit (500kb)
Volkswagen Passat Diesel (129 HP) 2003 KW 1281
Volkswagen Passat Diesel (161 HP) 2005
Volkswagen Passat Diesel (129 HP) 2002 KW 1281
Volkswagen Passat Diesel (129 HP) 2004 KW 1281
Volkswagen Passat Gasoline (114 HP) 1994
Volkswagen Passat Motor: 2E, Gasoline (114 HP) 1994 KW 1281
Volkswagen Passat Diesel (89 HP) 1995
Volkswagen Passat Gasoline (89 HP) 1995
Volkswagen Passat Gasoline (89 HP) 1995
Volkswagen Passat 35i – Variant Gasoline (114 HP) 1994 KW 1281
Volkswagen Passat 35i ADZ , Modelljahr 96, Automatik, Gasoline (89 HP) 1995 KW 1281
Volkswagen Passat 35i Facelift / 3A5 Gasoline (89 HP) 1994
Volkswagen Passat 35I MKB ABF Gasoline (148 HP) 1994 KW 1281
Volkswagen Passat 3A (MKB:AFN) Diesel (109 HP) 1995 ISO 9141-2
Volkswagen Passat 3b (AEB engine), Gasoline (148 HP) 1995 KW 1281
Volkswagen Passat 3b Diesel (109 HP) 1997 KW 1281
Volkswagen Passat 3b Diesel (109 HP) 1998 KW 1281
Volkswagen Passat 3b Diesel (109 HP) 1998
Volkswagen Passat 3b Gasoline (148 HP) 1998
Volkswagen Passat 3b Diesel (109 HP) 1998 KW 1281
Volkswagen Passat 3b Diesel (114 HP) 1999 KW 1281
Volkswagen Passat 3b Diesel (89 HP) 2000 KW 1281
Volkswagen Passat 3b Diesel (116 HP) 2000 KW 1281
Volkswagen Passat 3b 1,8l 20V, Gasoline (168 HP) 1997 KW 1281
Volkswagen Passat 3b 2.3 10V VR5, Gasoline (148 HP) 1998 KW 1281
Volkswagen Passat 3b Diesel (109 HP) 1998 KW 1281
Volkswagen Passat 3B Limousine Gasoline (124 HP) 1997 KW 1281
Volkswagen Passat 3B5 Gasoline (124 HP) 1997
Volkswagen Passat 3B5 Gasoline (148 HP) 2000 CAN
Volkswagen Passat 3B5 Diesel (148 HP) 2000 KW 1281
Volkswagen Passat 3B5 Diesel (109 HP) 1997 KW 1281
Volkswagen Passat 3B5 Gasoline (124 HP) 1999 KW 1281
Volkswagen Passat 3B5 Diesel (114 HP) 2000 KW 1281
Volkswagen Passat 3B6 Diesel (129 HP) 2002
Volkswagen Passat 3BG Diesel (129 HP) 2001
Volkswagen Passat 3BG Diesel (129 HP) 2001 KW 1281
Volkswagen Passat 3BG Gasoline (148 HP) 2001 KW 1281
Volkswagen Passat 3BG Diesel (129 HP) 2002 ISO 9141-2
Volkswagen Passat 3BG Gasoline (161 HP) 2002
Volkswagen Passat 3BG Diesel (129 HP) 2002 KW 1281
Volkswagen Passat 3BG Gasoline (148 HP) 2002 KW 1281
Volkswagen Passat 3BG Diesel (129 HP) 2002 KW 1281
Volkswagen Passat 3BG Diesel (100 HP) 2003 KW 1281
Volkswagen Passat 3BG Diesel (129 HP) 2003 KW 1281
Volkswagen Passat 3BG Diesel (129 HP) 2003 ISO 9141-2
Volkswagen Passat 3BG Gasoline (191 HP) 2003
Volkswagen Passat 3BG Diesel (129 HP) 2004 KW 1281
Volkswagen Passat 3BG Variant 1.9 PD, TT5, Diesel (129 HP) 2004 KW 1281
Volkswagen Passat 3C Diesel (139 HP) 2006 CAN
Volkswagen Passat 3C Diesel (139 HP) 2007 CAN
Volkswagen Passat 3C Diesel (102 HP) 2005
Volkswagen Passat 3C Diesel (102 HP) 2005
Volkswagen Passat AVB 3b6 Diesel (100 HP) 2001 KW 1281
Volkswagen Passat B4 Gasoline (119 HP) 1994
Volkswagen Passat B4 Gasoline (114 HP) 1995 KW 1281
Volkswagen Passat B5 (3BG) Diesel (129 HP) 2003 KW 1281
Volkswagen Passat Facelift TDI 1Z, Diesel (89 HP) 1995 KW 1281
Volkswagen Passat Variant 1.9 TDI, Diesel (89 HP) 1995 KW 1281
Volkswagen Passat Variant Diesel (89 HP) 1997
Volkswagen Passat Variant 2.0 TDI mit DPF, Diesel (135 HP) 2004 KW 1281
Volkswagen Passat Variant Gasoline (89 HP) 1995 KW 1281
Volkswagen Passat Variant Gasoline (89 HP) 1995
Volkswagen Passat Variant Diesel (109 HP) 1999 ISO 14230-4, ISO 9141-2
Volkswagen Passat Variant Gasoline (100 HP) 2000 KW 1281
Volkswagen Passat Variant Gasoline (100 HP) 2000 KW 1281
Volkswagen Passat Variant Diesel (104 HP) 2007 CAN
Volkswagen Phaeton 5.0 tdi, Diesel (313HP) 2004 ISO 9141
Volkswagen Polo Gasoline (45 HP) 1991 ISO 9141-2
Volkswagen Polo Gasoline (54 HP) 1992
Volkswagen Polo 1,3 (AAV), Gasoline (54 HP) 1992
Volkswagen Polo Gasoline (50 HP) 1998
Volkswagen Polo 1.6 SDI, Diesel (64HP) 1998 ISO 9141
Volkswagen Polo 1.4 tdi, Diesel (75HP) 2000 ISO 9141
Volkswagen Polo 1.4, Gasoline (75HP) 2000 ISO 9141
Volkswagen Polo 1.4 tdi, Diesel (75HP) 2001 ISO 9141
Volkswagen Polo Diesel (74 HP) 2002 KW 1281
Volkswagen Polo 1.9 SDI, Diesel (64HP) 2002 ISO 9141
Volkswagen Polo Gasoline (64 HP) 2003 KW 1281
Volkswagen Polo 1.4, Gasoline (54HP) 2003 ISO 9141
Volkswagen Polo 1.2 16v, Gasoline (65HP) 2004 ISO 9141
Volkswagen Polo 1.9 TDi, Diesel (100HP) 2004 ISO 9141
Volkswagen Polo 1.9 tdi, Diesel (130HP) 2004 ISO 9141
Volkswagen Polo 9N3, FSI, Gasoline (85 HP) 2005 ISO 9141-2
Volkswagen Polo 1.4 TDi, Diesel (80HP) 2006 ISO 9141
Volkswagen Polo 1.4, Gasoline (100HP) 2006 ISO 9141
Volkswagen Polo 1.4 TDi, Diesel (70HP) 2007 ISO 9141
Volkswagen Polo 1.6, Gasoline (105HP) 2007 KWP SLOW
Volkswagen Polo 1.6, Diesel (70HP) 2010 CAN 11bit (500kb)
Volkswagen Polo 1.6 TDi, Diesel (90HP) 2011 CAN 11bit (500kb)
Volkswagen Polo 1.2 TSI, Gasoline (105HP) 2011 CAN 11bit (500kb)
Volkswagen Polo MKB: 3F, Gasoline (74 HP) 1991 KW 1281
Volkswagen Polo Gasoline (45 HP) 1991 KW 1281
Volkswagen Polo 6N Gasoline (45 HP) 1994
Volkswagen Polo 6N Gasoline (45 HP) 1995
Volkswagen Polo 6N Gasoline (60 HP) 1995 KW 1281
Volkswagen Polo 6N Gasoline (60 HP) 1995 KW 1281
Volkswagen Polo 6N Gasoline (45 HP) 1995 KW 1281
Volkswagen Polo 6N Gasoline (60 HP) 1995 KW 1281
Volkswagen Polo 6N Gasoline (74 HP) 1995 KW 1281
Volkswagen Polo 6N Gasoline (60 HP) 1995 KW 1281
Volkswagen Polo 6N Gasoline (74 HP) 1995
Volkswagen Polo 6N 1.05 AEV, Gasoline (45 HP) 1995 KW 1281
Volkswagen Polo 6N Gasoline (74 HP) 1997 KW 1281
Volkswagen Polo 6N Gasoline (61 HP) 1997
Volkswagen Polo 6N Gasoline (50 HP) 1997 KW 1281
Volkswagen Polo 6N Gasoline (61 HP) 1998 KW 1281
Volkswagen Polo 6N Gasoline (60 HP) 1998 KW 1281
Volkswagen Polo 6N Gasoline (60 HP) 1998
Volkswagen Polo 6N Gasoline (60 HP) 1998 KW 1281
Volkswagen Polo 6N Gasoline (61 HP) 1998
Volkswagen Polo 6N 1,0l, Gasoline (50 HP) 1998 KW 1281
Volkswagen Polo 6N Gasoline (60 HP) 1999
Volkswagen Polo 6N Gasoline (60 HP)

Using the Compatibility List:

This list provides valuable information on the OBD2 protocol used by different Volkswagen models and engine types, starting from a specific year. When diagnosing a VW, you can consult this list to understand what type of communication protocol your diagnostic tool needs to support.

  • CAN (Controller Area Network): Indicates a modern, high-speed diagnostic protocol. Most VW vehicles from the mid-2000s onwards utilize CAN. Within CAN, “11bit (500kb)” refers to specific parameters of the CAN implementation, which are generally handled automatically by modern diagnostic tools.

  • ISO 14230-4 (KWP2000) & ISO 9141-2: These are older protocols, typically found in VW vehicles from the late 1990s to early 2000s. If your VW from this era is listed with these protocols, ensure your diagnostic tool is compatible with ISO 9141 or KWP2000.

  • KW 1281 & KW 2000 VAG: These are Volkswagen-specific protocols that predate the full adoption of OBD2 standardization, or represent early implementations. While technically not standard OBD2 protocols, they are diagnostic protocols used by VW during that period. Tools designed for VW diagnostics often support these older KW protocols. “KWP SLOW” and “KWP FAST” refer to variations in the KWP2000 protocol speed.

  • “-“: In some entries, a “-” indicates that the specific OBD2 protocol is not listed, or the information was not available in the source data. For these models, and especially for older vehicles, it’s always best to:

    • Consult the vehicle’s owner’s manual or repair documentation.
    • Visually inspect the OBD2 connector. While the physical connector is standardized, the supported protocols can vary.
    • Start with a generic OBD2 scan. Modern scanners often auto-detect the protocol.

Important Note: This compatibility list is based on available data and may not be 100% complete or accurate for every single vehicle due to variations in production and regional differences. Always verify with official vehicle documentation when possible.

Why is VW OBD2 Pinout Important for Diagnostics?

Understanding the vw obd2 pinout and compatibility is crucial for several reasons:

  • Correct Diagnostic Tool Connection: Knowing the pinout ensures that you are using the correct adapter and connecting your diagnostic tool to the right pins. Incorrect connections can lead to communication errors or potentially damage the vehicle’s electronic systems or the diagnostic tool.

  • Protocol Identification: The pinout, in conjunction with the compatibility list, helps identify the communication protocols used by your VW. This allows you to select a diagnostic tool that supports the necessary protocol (CAN, ISO 9141, KWP2000, etc.) for effective communication.

  • Advanced Diagnostics and Repair: For more in-depth diagnostics, especially when troubleshooting communication issues or performing advanced functions like ECU programming or coding, understanding the pinout is essential. It allows technicians to perform pin-level checks and understand the signal flow within the diagnostic interface.

  • Custom Diagnostic Solutions: For advanced users or developers creating custom diagnostic solutions, the pinout is fundamental for building interfaces or adapters to communicate with VW vehicles at a deeper level.

Conclusion

The VW OBD2 pinout is a vital piece of information for anyone working with Volkswagen vehicle diagnostics. From basic fault code reading to advanced ECU programming, a solid understanding of the OBD2 connector and its pin functions, alongside protocol compatibility, is essential for efficient and accurate vehicle maintenance and repair. By using this guide and the compatibility list, you can better navigate the world of VW diagnostics and ensure you’re equipped to handle any diagnostic task effectively.

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