Understanding the Audi Obdii Pinout is crucial for anyone involved in diagnosing and repairing modern Audi vehicles. Whether you are a professional mechanic or a dedicated DIY enthusiast, accessing your Audi’s On-Board Diagnostics (OBD) system is the first step towards efficient troubleshooting and maintenance. This guide provides a detailed look into the Audi OBDII pinout, compatibility, and related protocols, ensuring you have the knowledge to effectively interact with your vehicle’s computer.
Understanding the Audi OBDII Pinout
The OBDII connector is a standardized 16-pin interface found in most modern vehicles, including Audis. This port allows diagnostic tools to communicate with the vehicle’s electronic control units (ECUs) to read fault codes, access live data, and perform various diagnostic tests. Knowing the function of each pin within the Audi OBDII pinout is essential for safe and effective diagnostics.
Below is a table detailing the standard OBDII pin assignments, which apply to Audi vehicles:
| Pin | Signal | Description |
|---|---|---|
| 2 | J1850 Bus+ | Used in SAE J1850 PWM and VPW communication protocols |
| 4 | CGND | Chassis Ground |
| 5 | SGND | Signal Ground |
| 6 | CAN High | CAN bus High signal line (ISO 15765-4 and SAE J2284) |
| 7 | K-LINE | K-line for ISO 9141-2 and ISO 14230-4 (KWP2000) protocols |
| 10 | J1850 Bus- | Used in SAE J1850 PWM and VPW communication protocols |
| 14 | CAN Low | CAN bus Low signal line (ISO 15765-4 and SAE J2284) |
| 15 | ISO 9141-2 L-LINE | L-line for ISO 9141-2 and ISO 14230-4 (KWP2000) protocols |
| 16 | +12V | Battery Power (Vehicle Battery Voltage) |
This table outlines the fundamental Audi OBDII pinout, highlighting pins crucial for communication protocols and power supply to diagnostic tools. Pins 4 and 5 provide ground connections, essential for completing electrical circuits, while pin 16 delivers the necessary +12V power from the vehicle’s battery to operate OBDII scanners and interfaces. The communication pins (2, 6, 7, 10, 14, 15) are where the data exchange happens, each linked to different communication protocols that Audi vehicles have used over the years.
Audi OBDII Protocol Compatibility List
Audi has employed various OBDII protocols across its model range and production years. Understanding which protocol your specific Audi model uses is vital for selecting the correct diagnostic tools and ensuring successful communication. While OBDII is standardized in terms of the 16-pin connector, the communication protocols have evolved.
Here’s a compatibility list, although it’s important to note that this may not be exhaustive and should be verified against your vehicle’s documentation or through diagnostic tool auto-detection features:
| Model | Engine | Year (starting from) | OBD-2 Protocol |
|---|---|---|---|
| Audi 100 | C4 2.5 TDI AAT 1.Generation, Diesel (114 HP) | 1992 | KW 1281 |
| C4 4A, Gasoline (114 HP) | 1994 | ||
| Audi 200 | 20V, Gasoline (218 HP) | 1990 | |
| Audi 80 | Gasoline (172 HP) | 1991 | KW 1281 |
| 2,8E Automatik, Gasoline (172 HP) | 1991 | KW 1281 | |
| B4, Gasoline (112 HP) | 1991 | ||
| B4, Gasoline (114 HP) | 1992 | KW 1281 | |
| B4, TDI, MKB 1Z, Diesel (89 HP) | 1992 | KW 1281 | |
| (B4) 2.0 ABT, Gasoline (89 HP) | 1993 | KW 1281 | |
| B4, Gasoline (114 HP) | 1993 | KW 1281 | |
| B4 Motor ABK, ECU:039906024A Digifant 1.75 , Gasoline (114 HP) | 1993 | KW 1281 | |
| B4 TDI, Diesel (89 HP) | 1993 | KW 1281 | |
| Gasoline (89 HP) | 1994 | KW 1281 | |
| (B4) Motor ABT, Gasoline (89 HP) | 1994 | ||
| B4, Gasoline (89 HP) | 1994 | KW 1281 | |
| B4, Gasoline (89 HP) | 1994 | KW 1281 | |
| B4 (ABT), Gasoline (89 HP) | 1994 | KW 1281 | |
| B4 2.0 (ABT), Gasoline (89 HP) | 1994 | KW 1281 | |
| tdi, Diesel (89 HP) | 1994 | KW 1281 | |
| TDI (B4), Diesel (89 HP) | 1995 | KW 1281 | |
| Audi 80 Avant | Gasoline (114 HP) | 1995 | KW 1281 |
| Audi 80 Coupe | Gasoline (172 HP) | 1994 | ISO 9141-2 |
| Audi 8L | 1,8 Turbo Oettinger, Gasoline (191 HP) | 1997 | |
| Audi A1 | 1.4 TFSI, Gasoline (122HP) | 2012 | CAN 11bit (500kb) |
| Audi A2 | Gasoline (74 HP) | 2000 | |
| 1,4 TDI, Diesel (74 HP) | 2001 | ISO 9141-2 | |
| 1.4L, Gasoline (74 HP) | 2001 | KW 1281 | |
| 1.4, Diesel (75HP) | 2001 | ISO 9141 | |
| Diesel (88 HP) | 2002 | KW 1281 | |
| 1,4 TDI, Diesel (74 HP) | 2002 | KW 1281 | |
| 1.2 TDI, Diesel (61 HP) | 2002 | KW 1281 | |
| Gasoline (74 HP) | 2004 | ISO 9141-2 | |
| Diesel (89 HP) | 2004 | KW 2000 VAG | |
| 1.6 FSI, Gasoline (110HP) | 2004 | ISO 9141 | |
| Diesel (89 HP) | 2005 | KW 1281 | |
| Audi A3 | Gasoline (100 HP) | 1988 | |
| Gasoline (124 HP) | 1995 | KW 1281 | |
| (L, Gasoline (109 HP) | 1995 | KW 1281 | |
| 1.9 tdi, Diesel (90HP) | 1996 | ISO 9141 | |
| Gasoline (124 HP) | 1997 | KW 1281 | |
| Diesel (109 HP) | 1997 | KW 1281 | |
| 8L, Diesel (89 HP) | 1997 | KW 1281 | |
| 8L, Diesel (89 HP) | 1997 | KW 1281 | |
| (8L), Automatikgetriebe, Gasoline (100 HP) | 1997 | KW 1281 | |
| Gasoline (148 HP) | 1998 | KW 1281 | |
| Gasoline (148 HP) | 1998 | KW 1281 | |
| Diesel (108 HP) | 1999 | KW 1281 | |
| tdi 8L, Diesel (89 HP) | 1999 | KW 1281 | |
| 1.8T AUM, Gasoline (148 HP) | 2000 | KW 1281 | |
| 1.9 TDi, Diesel (110HP) | 2000 | ISO 9141 | |
| 1.8 Turbo, Gasoline (180HP) | 2000 | ISO 9141 | |
| Gasoline (101 HP) | 2001 | KW 1281 | |
| Diesel (109 HP) | 2001 | KW 1281 | |
| 1.6, Gasoline (102HP) | 2001 | KWP SLOW | |
| 1.9 tdi, Diesel (130HP) | 2001 | ISO 9141 | |
| 1.8 Turbo, Gasoline (210HP) | 2001 | ISO 9141 | |
| – 8L – , Diesel (129 HP) | 2002 | KW 1281 | |
| 8L, Gasoline (101 HP) | 2002 | ||
| 8L, Diesel (100 HP) | 2002 | KW 1281 | |
| 1.9 tdi, Diesel (105HP) | 2002 | ISO 9141 | |
| 2.0 tdi, Diesel (140HP) | 2003 | #ССЫЛКА! | |
| P8, Diesel (139 HP) | 2004 | CAN | |
| P8, Diesel (139 HP) | 2004 | KW 1281 | |
| – 8P, Gasoline (97 HP) | 2004 | CAN | |
| 8p, Gasoline (97 HP) | 2004 | ||
| 8P, Diesel (139 HP) | 2004 | KW 1281 | |
| 3.2 V6, Gasoline (250HP) | 2004 | KWP SLOW | |
| 1.9TDi, Diesel (105HP) | 2005 | KWP SLOW | |
| 2.0 TFSi, Gasoline (200HP) | 2005 | KWP SLOW | |
| 1.9 TDi, Diesel (90HP) | 2006 | KWP SLOW | |
| 2.0 TDi, Diesel (170HP) | 2006 | CAN 11bit (500kb) | |
| 1.4 T, Gasoline (124 HP) | 2007 | CAN | |
| 8P, Gasoline (101 HP) | 2007 | ISO 9141-2 | |
| 8P / 151 KW / Disel Sportback 2,0 L, Diesel (203 HP) | 2007 | KW 2000 VAG | |
| 2.0 tdi, Diesel (140HP) | 2007 | KWP SLOW | |
| 2, Gasoline (200HP) | 2007 | CAN 11bit (500kb) | |
| 2.0 TDI, Diesel (136 HP) | 2008 | CAN | |
| 2.0 TDi, Diesel (140HP) | 2008 | CAN 11bit (500kb) | |
| Audi A3 8PA Sportback | Diesel (104 HP) | 2007 | |
| Audi A3 Cabrio | 8P 1,9l, Diesel (104 HP) | 2008 | CAN |
| Audi A4 | Gasoline (124 HP) | 1995 | KW 1281 |
| Gasoline (124 HP) | 1995 | ||
| Gasoline (100 HP) | 1995 | KW 1281 | |
| Gasoline (172 HP) | 1995 | KW 1281 | |
| (B5), Diesel (89 HP) | 1995 | KW 1281 | |
| 1,8T AEB, Gasoline (148 HP) | 1995 | KW 1281 | |
| 1.8, Gasoline (123 HP) | 1995 | KW 1281 | |
| 1.9 TDi, Diesel (110HP) | 1996 | ISO 9141 | |
| Diesel (109 HP) | 1997 | KW 1281 | |
| (B5), Gasoline (100 HP) | 1997 | KW 1281 | |
| (B5) Avant (1.9 TDI, Motor: AFN), Diesel (109 HP) | 1997 | KW 1281 | |
| 1.8 20V, Gasoline (124 HP) | 1997 | KW 1281 | |
| 1.9 TDI AFN, Diesel (119 HP) | 1997 | KW 1281 | |
| Gasoline (148 HP) | 1998 | ||
| 1998 | ISO 14230-4, ISO 9141-2 | ||
| Diesel (109 HP) | 1998 | ||
| Diesel (124 HP) | 1998 | KW 1281 | |
| 1.9 tdi, Diesel (110HP) | 1998 | ISO 9141 | |
| Diesel (172 HP) | 1999 | ||
| 2.5 TDi, Diesel (150HP) | 1999 | ISO 9141 | |
| (B5) Avant 2,5TDI, Diesel (148 HP) | 2000 | KW 1281 | |
| 1,8t s-line B5, Gasoline (148 HP) | 2000 | ||
| 1.9 tdi, Diesel (115HP) | 2000 | ISO 9141 | |
| 2001 | ISO 14230-4, ISO 9141-2 | ||
| Diesel (114 HP) | 2001 | ISO 9141-2 | |
| Diesel (129 HP) | 2001 | ||
| 1.9 TDI, Diesel (114 HP) | 2001 | ISO 9141-2 | |
| 1.9 TDI, Diesel (109 HP) | 2001 | ISO 9141-2 | |
| 2,5 TDI quattro (8E/B6), Diesel (178 HP) | 2001 | KW 1281 | |
| V6 Quattro (8E), Gasoline (218 HP) | 2001 | KW 1281 | |
| 1.9 TDi, Diesel (130HP) | 2001 | ISO 9141 | |
| 1.8 T, Gasoline (150HP) | 2001 | ISO 9141 | |
| 2.5 TDi, Diesel (155HP) | 2001 | ISO 9141 | |
| Diesel (161 HP) | 2002 | KW 1281 | |
| (8E), Diesel (129 HP) | 2002 | KW 1281 | |
| 1.9 tdi, Diesel (101HP) | 2002 | ISO 9141 | |
| 2.5 V6 tdi, Diesel (180HP) | 2002 | ISO 9141 | |
| 8e, Gasoline (161 HP) | 2003 | ||
| -Avant-2,5TDI, Diesel (178 HP) | 2003 | KW 1281 | |
| 1.8 T, Gasoline (163HP) | 2003 | KWP SLOW | |
| Gasoline (129 HP) | 2004 | ||
| 2,5 TDI , Diesel (161 HP) | 2004 | KW 1281 | |
| TDI 1.9, Diesel (117 HP) | 2004 | ISO 14230-4 | |
| 1.9 tdi, Diesel (116HP) | 2004 | KWP SLOW | |
| 2.5, Diesel (163HP) | 2004 | ISO 9141 | |
| (B7), Gasoline (198 HP) | 2005 | CAN | |
| 2.0 tdi (BPW), Diesel (140HP) | 2005 | CAN 11bit (500kb) | |
| 2, Diesel (140HP) | 2005 | CAN 11bit (500kb) | |
| 1.9 TDi, Diesel (115HP) | 2006 | CAN 11bit (500kb) | |
| tdi, Diesel (136HP) | 2010 | CAN 11bit (500kb) | |
| 2.0 TDi, Diesel (143HP) | 2011 | CAN 11bit (500kb) | |
| Audi a4 AFN | Diesel (109 HP) | 1998 | KW 1281 |
| Audi A4 AHU | Gasoline (89 HP) | 1998 | |
| Audi A4 Avant | Gasoline (124 HP) | 1995 | |
| B5, Gasoline (124 HP) | 1995 | ||
| Gasoline (148 HP) | 1997 | ||
| Quattro 1.8T, Gasoline (148 HP) | 1997 | ||
| Gasoline (124 HP) | 1999 | KW 1281 | |
| 8D5, 2.5TDI, Diesel (148 HP) | 1999 | KW 1281 | |
| B6 1.9TDI, Diesel (129 HP) | 2005 | KW 1281 | |
| 2.7 TDI DPF, Diesel (178 HP) | 2006 | CAN | |
| B7/8E, Diesel (139 HP) | 2007 | KW 1281 | |
| 3.0 TDI 8ED , Diesel (230 HP) | 2008 | ||
| 3.0 TDI 8ED, Diesel (230 HP) | 2008 | ||
| Audi a4 b5 | Gasoline (172 HP) | 1994 | |
| Gasoline (172 HP) | 1995 | ||
| Gasoline (98 HP) | 1995 | ||
| (1.9 TDI, Motor: 1Z), Diesel (89 HP) | 1995 | KW 1281 | |
| (8D), Gasoline (100 HP) | 1995 | KW 1281 | |
| 8D, Gasoline (104 HP) | 1995 | ISO 9141-2 | |
| Gasoline (148 HP) | 1997 | KW 1281 | |
| 1.8T, Gasoline (148 HP) | 1997 | ||
| Gasoline (124 HP) | 1998 | KW 1281 | |
| (8D), Gasoline (100 HP) | 1998 | KW 1281 | |
| TDI 81KW AFN Quattro, Diesel (109 HP) | 1998 | KW 1281 | |
| Gasoline (100 HP) | 1999 | KW 1281 | |
| Gasoline (163 HP) | 1999 | KW 1281 | |
| (mod. 2000), Gasoline (100 HP) | 1999 | KW 1281 | |
| ab 1999, Gasoline (148 HP) | 1999 | KW 1281 | |
| Gasoline (124 HP) | 2000 | ||
| Gasoline (124 HP) | 2000 | ISO 9141-2 | |
| Gasoline (100 HP) | 2000 | KW 1281 | |
| Diesel (148 HP) | 2000 | KW 1281 | |
| Audi A4 B5 Avant | Diesel (109 HP) | 1997 | KW 1281 |
| Diesel (114 HP) | 2000 | KW 1281 | |
| Audi A4 B6 | 2.0 (engine code ALT), Gasoline (129 HP) | 2001 | KW 1281 |
| 8E, Gasoline (128 HP) | 2001 | ||
| Audi A4 B7 Avant | Diesel (168 HP) | 2007 | KW 1281 |
| Audi A4 B7 Variant | Diesel (161 HP) | 2005 | KW 1281 |
| Audi A4 Cabrio | Gasoline (202 HP) | 2002 | |
| 3.0 V6 (ASN), Gasoline (218 HP) | 2003 | KW 1281 | |
| Audi A4 Kombi | Gasoline (124 HP) | 1999 | KW 1281 |
| 2-Liter/4-Zyl., Gasoline (131 HP) | 2002 | ISO 14230-4 | |
| Audi A4/S4 | (B5), Gasoline (262 HP) | 2000 | ISO 9141-2 |
| Audi A5 | 3.2 FSI, Gasoline (265HP) | 2008 | CAN 11bit (500kb) |
| 2.0 TFSI, Gasoline (211HP) | 2011 | CAN 11bit (500kb) | |
| Audi A6 | C4, Gasoline (148 HP) | 1994 | ISO 9141-2 |
| C4, Gasoline (114 HP) | 1994 | ||
| (C4), Gasoline (148 HP) | 1995 | KW 1281 | |
| 2,6 (Typ C4), Gasoline (148 HP) | 1995 | ISO 9141-2 | |
| C4, Gasoline (148 HP) | 1995 | KW 1281 | |
| C4, Diesel (139 HP) | 1995 | KW 1281 | |
| C4, Diesel (114 HP) | 1995 | KW 1281 | |
| C4 4A, Diesel (139 HP) | 1995 | KW 1281 | |
| C4 Motor ABK, Gasoline (114 HP) | 1995 | ||
| , Diesel (139 HP) | 1995 | KW 1281 | |
| 1998 | ISO 14230-4, ISO 9141-2 | ||
| Diesel (202 HP) | 1998 | ||
| 2.8 Avant Quattro, Gasoline (191 HP) | 1998 | ISO 9141-2 | |
| (4B), Gasoline (148 HP) | 1999 | KW 1281 | |
| 2,5 tdI, Diesel (148 HP) | 1999 | ||
| 4B, Gasoline (148 HP) | 1999 | KW 1281 | |
| 4B, Diesel (148 HP) | 1999 | ||
| 4B 2,5 TDI, Diesel (135 HP) | 1999 | ||
| 4B C5 Avant 2.8, Gasoline (191 HP) | 1999 | KW 1281 | |
| Diesel (148 HP) | 2000 | ||
| Diesel (148 HP) | 2000 | ||
| 4B 2,7T, Gasoline (227 HP) | 2000 | KW 1281 | |
| 4B 2.8l V6 quattro, Gasoline (191 HP) | 2000 | KW 1281 | |
| B4-C5, Diesel (178 HP) | 2000 | KW 1281 | |
| 2.5 V6 tdI, Diesel (150HP) | 2000 | ISO 9141 | |
| Diesel (148 HP) | 2001 | KW 1281 | |
| 2.4, Gasoline or LPG (165HP) | 2001 | ISO 9141 | |
| 1.9 TDi, Diesel (130HP) | 2002 | ISO 9141 | |
| 2.5 tdi, Diesel (163HP) | 2002 | ISO 9141 | |
| 2.5 V6 tdI, Diesel (180HP) | 2002 | ISO 9141 | |
| 2.7t, Gasoline (250HP) | 2002 | ISO 9141 | |
| 4B 2,5 TDI, Diesel (161 HP) | 2003 | ISO 9141-2 | |
| 4B, Gasoline (218 HP) | 2003 | KW 1281 | |
| 4B Avant 3.0, Gasoline (218 HP) | 2003 | KW 1281 | |
| 4B06H 1.9 TDI, Diesel (135 HP) | 2003 | KW 1281 | |
| 4B, Diesel (178 HP) | 2003 | ||
| Gasoline (242 HP) | 2004 | CAN | |
| 2,5 TDI, Diesel (178 HP) | 2004 | ISO 9141-2 | |
| Gasoline (171 HP) | 2005 | ||
| 2.5 TDI, Diesel (178 HP) | 2005 | ISO 9141-2 | |
| 3.0 TDI (Typ: 4F), Diesel (222 HP) | 2005 | CAN | |
| 3l V6 TDi, Diesel (225HP) | 2005 | CAN 11bit (500kb) | |
| 3, Diesel (233HP) | 2005 | CAN 11bit (500kb) | |
| Diesel (137 HP) | 2006 | ||
| C6, Diesel (137 HP) | 2006 | ||
| 2.7, Diesel (180HP) | 2006 | CAN 11bit (500kb) | |
| Diesel (179 HP) | 2007 | ||
| 2.0 TDi, Diesel (139HP) | 2009 | CAN 11bit (500kb) | |
| Audi A6 Allroad | (4b), Diesel (176 HP) | 2001 | KW 1281 |
| Audi A6 Avant | 2,4 Motor ALF V6, Gasoline (163 HP) | 1998 | ISO 9141-2 |
| 2,4 V6, Gasoline (163 HP) | 1998 | KW 1281 | |
| Diesel (148 HP) | 1999 | ||
| quattro, Gasoline (218 HP) | 2001 | KW 1281 | |
| 2,5 TDI quattro, Diesel (178 HP) | 2003 | KW 1281 | |
| Audi A8 | , Gasoline (227 HP) | 1995 | KW 1281 |
| , Gasoline (401 HP) | 1995 | ||
| 2.5, Diesel (150HP) | 1998 | ISO 9141 | |
| 4.2 V8, Gasoline (340HP) | 1998 | ISO 9141 | |
| 3.7, Gasoline (280HP) | 2002 | KWP SLOW | |
| , Diesel (238 HP) | 2004 | ISO 9141-2 | |
| , Gasoline (330 HP) | 2005 | CAN | |
| Audi Allroad | Gasoline (247 HP) | 2000 | KW 1281 |
| Gasoline (247 HP) | 2002 | ||
| Gasoline (247 HP) | 2002 | ISO 14230-4, ISO 9141-2 | |
| Audi B4 | 2,6 MK ABC, Gasoline (148 HP) | 1993 | KW 1281 |
| 2,6l Avant Quattro, Gasoline (148 HP) | 1994 | KW 1281 | |
| Audi B5 | Gasoline (124 HP) | 1995 | KW 1281 |
| Audi B5 Avant | Gasoline (124 HP) | 1999 | KW 1281 |
| Audi Cabrio | Typ 89 (8H), Gasoline (124 HP) | 2000 | KW 1281 |
| Typ 89, Gasoline (148 HP) | 1995 | KW 1281 | |
| 1997 | ISO 14230-4, ISO 9141-2 | ||
| Gasoline (148 HP) | 1997 | KW 1281 | |
| Audi Coupe | 20V Quattro, Gasoline (165 HP) | 1990 | KW 1281 |
| Gasoline (172 HP) | 1992 | KW 1281 | |
| Typ89, Gasoline (148 HP) | 1995 | ||
| Audi Q5 | Diesel (168 HP) | 2000 | CAN |
| 3.0 TDi, Diesel (190HP) | 2010 | CAN 11bit (500kb) | |
| Audi Q7 | 3, Diesel (211HP) | 2007 | CAN 11bit (500kb) |
| 3, Diesel (240HP) | 2008 | CAN 11bit (500kb) | |
| Audi Quattro | 2.V8 30v, Gasoline (191 HP) | 1997 | |
| Audi S 8 | Gasoline (336 HP) | 1998 | KW 1281 |
| Audi S3 | 2.0 TFSI, Gasoline (265HP) | 2007 | CAN 11bit (500kb) |
| Audi S4 | (B5) , Gasoline (261 HP) | 1999 | KW 1281 |
| 2.7 BiTurbo, Gasoline (258 HP) | 2001 | ||
| Gasoline (326 HP) | 2003 | ||
| 4.2 MPi, Gasoline (344HP) | 2003 | KWP SLOW | |
| Audi S6 | C4, Gasoline (227 HP) | 1995 | KW 1281 |
| (Modell 2001, 4B/C5), Gasoline (322 HP) | 2000 | KW 1281 | |
| Quattro V8 4.2, Gasoline (320 HP) | 2001 | ||
| 4.2 V8, Gasoline (340HP) | 2001 | ISO 9141 | |
| Audi TT | 1.8T, Gasoline (180HP) | 1998 | ISO 9141 |
| Coupe Quattro, Gasoline (222 HP) | 1999 | KW 1281 | |
| quattro, Gasoline (222 HP) | 1999 | KW 1281 | |
| 1.8 quattro, Gasoline (222 HP) | 2000 | KW 1281 | |
| Gasoline (148 HP) | 2001 | KW 1281 | |
| 1.8 Turbo, Gasoline (225HP) | 2001 | ISO 9141 | |
| Roadster, Gasoline (148 HP) | 2002 | ||
| 1.8 T, Gasoline (150HP) | 2002 | ISO 9141 | |
| Gasoline (188 HP) | 2003 | ||
| 1.8 Turbo, Gasoline (163HP) | 2004 | ISO 9141 | |
| 3.2 V6, Gasoline (250HP) | 2006 | CAN 11bit (500kb) | |
| 2.0 TFSI, Gasoline (211HP) | 2007 | CAN 11bit (500kb) | |
| Audi V8 | D11, Gasoline (247 HP) | 1990 | KW 1281 |
Note that list is not 100% complete! Always verify with your vehicle’s documentation.
This compatibility list provides valuable insight into the evolution of OBDII protocols in Audi vehicles. Early OBDII Audis often utilized KW 1281 and ISO 9141 protocols. As technology advanced, Audi transitioned to KWP2000 and eventually CAN (Controller Area Network) protocols, which are standard in most modern vehicles from 2008 onwards. The CAN protocol allows for higher data transfer rates and is essential for the complex electronic systems in contemporary Audis.
Decoding Audi OBDII Protocols for Diagnostics
Understanding the protocols mentioned in the compatibility list is key to choosing the right diagnostic equipment. Here’s a brief overview:
- KW1281: An older protocol used in early OBDII Audi models. It’s characterized by slower data transfer rates compared to newer protocols.
- ISO 9141: Another early OBDII protocol, similar to KW1281 in terms of speed and capabilities. Often used in European vehicles from the late 90s to early 2000s.
- KWP2000 (ISO 14230-4): A successor to ISO 9141, offering faster communication speeds and improved diagnostic capabilities. It was a common protocol in Audis from the early to mid-2000s.
- CAN (ISO 15765-4 & SAE J2284): The current standard for vehicle diagnostics. CAN bus systems are much faster and more robust, handling the vast amounts of data in modern vehicle electronics. Audis from around 2008 onwards predominantly use CAN.
The timeline of protocol implementation in Audi vehicles can be summarized as:
- 1996-2001 Models: Primarily ISO 9141 protocol.
- 2002-2004 Models: Transition period, using ISO 9141 or KWP2000.
- 2005-2007 Models: Variety of protocols including ISO 9141, KWP2000, or CAN.
- 2008 and Later Models: Predominantly CAN protocol.
This evolution in protocols reflects the advancements in automotive technology and diagnostics. Modern diagnostic tools are typically designed to be multi-protocol and automatically detect the protocol used by the vehicle. However, understanding these protocols ensures you can select compatible equipment and interpret diagnostic data effectively.
Utilizing OBDII Cable Schematics for Audi
For advanced diagnostics or custom setups, understanding OBDII cable schematics can be beneficial. Here are some common OBDII cable types and their applications, with links for detailed pinouts:
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OBD-2 ISO 9141-2 (14230-4, KWP2000) Simple Serial Cable: Used for older Audi models utilizing ISO 9141 or KWP2000 protocols. This is a basic cable for serial communication. OBD-2 ISO 9141-2 Cable Scheme
-
OBD-2 J1850 PWM, J1850 VPW Serial ELM327 Cable: Primarily for vehicles using J1850 protocols (common in some older US vehicles, less relevant for Audi). OBD-2 J1850 Cable Scheme
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OBD-2 Universal Diagnostic Cable for Multiple Protocols: A versatile cable designed to support PWM, VPW, ISO 9141-2, KWP2000, CAN, and SAE J1939. Ideal for workshops dealing with a wide range of vehicles, including various Audi models across different years. OBD-2 Universal Cable Scheme
These cable schematics are invaluable resources for building custom diagnostic interfaces or understanding the wiring configurations for different OBDII communication standards. While most modern diagnostic tools use standard OBDII cables, these schematics offer deeper insight into the physical layer of vehicle diagnostics.
Conclusion
A solid understanding of the Audi OBDII pinout, compatible protocols, and cable configurations is fundamental for effective Audi vehicle diagnostics and repair. This guide has provided a comprehensive overview to help you navigate the complexities of Audi’s OBDII system. By correctly identifying your vehicle’s protocol and utilizing the appropriate tools and knowledge, you can ensure accurate diagnoses, efficient repairs, and maintain the performance of your Audi. Remember to always consult your vehicle’s service manual and utilize reliable diagnostic resources for the most accurate and safe procedures.
