Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures - B6 Platform
  • DTC Index
    • DTC Index - 1.8L (AMB Engine)
    • DTC Index - 3.0L (AVK, BGN Engine)
  • Electrical Component Locations
    • Diagnostic Connector (DLC) Locations
    • Electrical Component Locator
  • Fluids
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Accessories Control Systems
    • Communication
    • Steering Column Module, Multi-Function Steering Wheel - Cabriolet
    • Steering Column Module, Multi-Function Steering Wheel - Except Cabriolet
  • Anti-Theft Systems
    • Body Exterior
    • Body On Board Diagnostic (OBD)
    • Electrical Equipment
    • Front Doors Central Locking System - Cabriolet
    • Front Doors Central Locking System - Except Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
  • Communication Devices
    • Communication
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
    • Navigation System - Except Cabriolet
    • On Board Diagnostic (OBD)
  • Cruise Control Systems
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Steering Column Module, Multi-Function Steering Wheel - Except Cabriolet
  • Entertainment Systems
    • Communication
    • Radio System - Cabriolet
    • Radio System - Except Cabriolet
    • Steering Column Module, Multi-Function Steering Wheel - Except Cabriolet
  • Exterior Lights
    • Electrical Equipment
    • Lights, Switches - Exterior - Cabriolet
    • Lights, Switches - Exterior - Except Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
  • Gauges & Instrument Panels
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Instrument Systems - Cabriolet
    • Instrument Systems - Except Cabriolet
    • Interior Trim - Cabriolet
    • Interior Trim - Except Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
    • Windshield Wiper Washer System - Except Cabriolet
  • Headlights
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Lights, Switches - Exterior - Cabriolet
    • Lights, Switches - Exterior - Except Cabriolet
    • Windshield Wiper Washer System - Except Cabriolet
  • Heated Glass/Defoggers
    • On Board Diagnostic (OBD)
  • Horns
    • Lights, Switches - Interior, Anti-Theft - Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
  • Ignition Switch/Steering Lock
    • Electrical Equipment
  • Infotainment
    • Communication
    • Navigation System - Cabriolet
    • Navigation System - Except Cabriolet
    • Radio System - Cabriolet
    • Radio System - Except Cabriolet
    • Steering Column Module, Multi-Function Steering Wheel - Except Cabriolet
  • Interior/Exterior Trim
    • Body Exterior
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
    • Interior Equipment - Except Cabriolet
    • Interior Trim - Cabriolet
    • Interior Trim - Except Cabriolet
  • Interior/Illumination Lights
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Lights, Switches - Interior, Anti-Theft - Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
  • Mirrors
    • Body On Board Diagnostic (OBD)
    • Exterior Equipment - Cabriolet
    • Exterior Equipment - Except Cabriolet
    • Interior Equipment - Except Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Cabriolet
  • Seats
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
    • Body On Board Diagnostic (OBD)
    • On Board Diagnostic (OBD) - Driver's Seat Adjustment With Memory
    • Seats Frames - Cabriolet
    • Seats Frames - Except Cabriolet
  • Steering Column Switches
    • Communication
    • Electrical Equipment
    • Lights, Switches - Exterior - Cabriolet
    • Lights, Switches - Exterior - Except Cabriolet
    • Steering
    • Steering Column Module, Multi-Function Steering Wheel - Cabriolet
    • Steering Column Module, Multi-Function Steering Wheel - Except Cabriolet
  • Warning Systems
    • Lights, Switches - Exterior - Except Cabriolet
  • Window Motors & Regulators
    • Body Exterior
    • Body On Board Diagnostic (OBD)
    • Electrical Equipment
    • Front Doors Central Locking System - Except Cabriolet
  • Wiper/Washer Systems
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Windshield Wiper Washer System - Cabriolet
    • Windshield Wiper Washer System - Except Cabriolet
  • Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.)
    • Electrical Equipment
    • Electrical Equipment - General Information
• Body & Frame
  • Door Locks
    • Body Exterior
    • Body On Board Diagnostic (OBD)
    • Electrical Equipment
    • Front Doors Central Locking System - Cabriolet
    • Front Doors Central Locking System - Except Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
  • Exterior Body Panels
    • Body Exterior
    • Body Front - Cabriolet
    • Body Front - Except Cabriolet
    • Bumpers - Cabriolet
    • Bumpers - Except Cabriolet
    • Exterior Equipment - Cabriolet
    • Exterior Equipment - Except Cabriolet
    • Front Doors Central Locking System - Cabriolet
    • Front Doors Central Locking System - Except Cabriolet
    • Hood, Lids - Cabriolet
    • Hood, Lids - Except Cabriolet
    • Rear Doors
  • Exterior/Interior Trim
    • Body Exterior
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
    • Interior Equipment - Except Cabriolet
    • Interior Trim - Cabriolet
    • Interior Trim - Except Cabriolet
  • Ignition Switch/Steering Lock
    • Electrical Equipment
  • Mirrors
    • Body On Board Diagnostic (OBD)
    • Exterior Equipment - Cabriolet
    • Exterior Equipment - Except Cabriolet
    • Interior Equipment - Except Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Cabriolet
  • Seats
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
    • Body On Board Diagnostic (OBD)
    • On Board Diagnostic (OBD) - Driver's Seat Adjustment With Memory
    • Seats Frames - Cabriolet
    • Seats Frames - Except Cabriolet
  • Sun Roof/T-Top/Convertible Top
    • Body Exterior
    • Convertible Tops
    • Electrical Equipment
    • Sunroof
  • Windows
    • Body Exterior
    • Body On Board Diagnostic (OBD)
    • Electrical Equipment
    • Front Doors Central Locking System - Except Cabriolet
• Brakes
  • Anti-Lock Brakes
    • Anti-Lock Brake System
    • Brake System
  • Mechanical - Hydraulic
    • Brake System
    • Brakes Hydraulic Components - Electric Brake System Vacuum Pump
    • Disc Brakes
  • Parking Brake System
  • Traction Control
    • Anti-Lock Brake System
    • Brake System
• Drivelines & Axles
  • Axle Shafts
    • Axle Shafts - Front & Rear
    • Suspension, Wheels, Steering
  • Differentials & Drive Axles
    • Continuously Variable Transmission (CVT) 01J
    • Continuously Variable Transmission (CVT) 01J - Internal Components, Servicing
    • Rear Final Drive - 01R
    • Rear Final Drive 0AR
    • Suspension, Wheels, Steering
  • Driveshaft & Universal Joints
    • Rear Final Drive - 01R
    • Rear Final Drive 0AR
  • Wheel Hubs
    • Suspension, Wheels, Steering
• Electrical
  • Body Electrical
    • Electrical Equipment
  • Charging Systems
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Generators & Regulators
  • Component Locations
    • Diagnostic Connector (DLC) Locations
    • Electrical Component Locator
  • Fuses & Circuit Breakers
    • Electrical Equipment
    • Fuses & Circuit Breakers
    • Fuses & Circuit Breakers - Except Cabriolet
  • Gauges
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Instrument Systems - Cabriolet
    • Instrument Systems - Except Cabriolet
    • Interior Trim - Cabriolet
    • Interior Trim - Except Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
    • Windshield Wiper Washer System - Except Cabriolet
  • Horns
    • Lights, Switches - Interior, Anti-Theft - Cabriolet
    • Lights, Switches - Interior, Anti-Theft - Except Cabriolet
  • Motors, Switches, Relays
    • Electrical Equipment
  • Starter
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Starting System
  • Wiring Diagrams
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Accessory Drive Belts
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
  • Cooling Fan
    • 3.0L - Engine Controls - Fuel Injection & Ignition, Engine Code(S): AVK, BGN
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
    • Electric Cooling Fans
  • Cooling System (Mechanical)
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
  • Exhaust
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
    • 3.0L - Exhaust System, Emission Controls, Generic Scan Tool Engine Codes: AVK, BGN
  • Fuel System
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Fuel Supply, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Generic Scan Tool, Engine Codes: AVK, BGN
    • Fuel Supply
    • Fuel Supply System
  • Lubrication System
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
  • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
  • Starter
    • Electrical Equipment
    • Electrical Equipment - General Information
    • Starting System
• Engine Performance
  • Adjustment
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
  • Application
    • Engine Controls - Introduction
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Fuel Delivery
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Fuel Supply, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Generic Scan Tool, Engine Codes: AVK, BGN
    • Fuel Supply
    • Fuel Supply System
  • Ignition System
    • 3.0L - Engine Controls - Fuel Injection & Ignition, Engine Code(S): AVK, BGN
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Ignition System, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Ignition/Glow Plug System, Engine Codes: AVK, BGN
  • Mode 6
    • Mode 6 - 2000-05 AVK And BGN A4, S4, RS4
    • Mode 6 - 2002-07 3.0L AVK A4, S4, RS4
  • Remove, Overhaul & Install
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
  • Specifications
    • 3.0L - Engine Mechanical, Engine Code(S): AVK, BGN
    • Firing Order & Cylinder Identification
  • System
    • 1.8L - Engine Controls - On Board Diagnostic (OBD) Engine Code(S): AMB
    • 3.0L - Engine Controls - Fuel Injection & Ignition, Engine Code(S): AVK, BGN
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Engine Controls - On Board Diagnostic (OBD) Engine Codes: AVK, BGN
    • 3.0L - Engine Controls - On Board Diagnostic (OBD), Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Exhaust System, Emission Controls, Generic Scan Tool Engine Codes: AVK, BGN
    • 3.0L - Fuel Supply, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Ignition System, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Ignition/Glow Plug System, Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Generic Scan Tool, Engine Codes: AVK, BGN
    • Fuel Supply
    • Fuel Supply System
  • Testing & Diagnosis
    • 1.8L - Engine Controls - On Board Diagnostic (OBD) Engine Code(S): AMB
    • 3.0L - Engine Controls - Fuel Injection & Ignition, Engine Code(S): AVK, BGN
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Engine Controls - On Board Diagnostic (OBD) Engine Codes: AVK, BGN
    • 3.0L - Engine Controls - On Board Diagnostic (OBD), Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Exhaust System, Emission Controls, Generic Scan Tool Engine Codes: AVK, BGN
    • 3.0L - Fuel Supply, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Ignition System, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Ignition/Glow Plug System, Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Engine Codes: AVK, BGN
    • 3.0L - MULTIPORT Fuel Injection (MFI), Generic Scan Tool, Engine Codes: AVK, BGN
    • Fuel Supply
    • Fuel Supply System
  • Tune-Up
    • 3.0L - Engine Controls - Fuel Injection & Ignition, Engine Code(S): AVK, BGN
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Automatic Transmission - Gears, Hydraulic Controls - Generic Scan Tool]
    • 3.0L - Engine Controls - Generic Scan Tool, Engine Codes: AVK, BGN [Fuel Supply - Ignition/Glow Plug System]
    • 3.0L - Ignition System, Generic Scan Tool, Engine Codes: AVK, BGN
    • 3.0L - Ignition/Glow Plug System, Engine Codes: AVK, BGN
  • Vacuum Diagrams
  • Wiring Diagrams
• General Information
  • Abbreviations
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
  • Basic Trouble Shooting
    • Basic Trouble Shooting - General Information
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
    • Engine Performance - Trouble Shooting - General Information
  • Brakes
    • Anti-Lock Brake Safety Precautions - General Information
    • Map - Brake Systems
    • Map - Routine Inspection Reference Guide
  • Check Lists
    • Symptom Check List Worksheet - General Information
  • Computer Relearn Procedures - Import
  • OBD-II Drive Cycles
  • Driveline/Axles
    • Drive Axle Noise Diagnosis - General Information
    • Gear Tooth Contact Patterns - General Information
    • Map - Drive Train & Transmission
    • Trouble Shooting - Clutches - General Information
  • DTC Index
    • DTC Index - 1.8L (AMB Engine)
    • DTC Index - 3.0L (AVK, BGN Engine)
  • Electrical
    • Electrical Equipment - General Information
    • Map - Electrical Systems
    • Using lemon2025'S System Wiring Diagrams
  • Engine
    • Engine Overhaul Procedures - General Information
    • General Cooling System Service - General Information
  • Engine Performance
    • Electrostatic Discharge Warning - General Information
    • Engine Performance Diagnostic Routine Outline - General Information
    • Engine Performance Safety Precautions
    • Map - Engine Performance & Maintenance
    • Parasitic Load Explanation & Test Procedures - General Information
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
    • Waveforms - Injector Pattern Tutorial - General Information
  • Map - Exhaust Systems
  • Heating, Ventilation & A/C (HVAC)
    • Map - Heating, Ventilation, & Air Conditioning
  • Identification
    • CANADIAN Model Cross-Reference
    • Transmission Application - A/T
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • How To Use The Engine Performance Section
  • Reset Procedures
    • BARTEC TPMS Reset Procedure
    • Maintenance Reminder Light (Reset Procedures)
  • Restraints
    • Air Bag Deactivation Procedures
    • Air Bag/SRS Component Inspection & Replacement Tables - EUROPEAN
  • Specifications Index
    • Common Specs & Procedures - B6 Platform
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • A/C Compressor
    • Heating & Air Conditioning
  • General Servicing
    • Cabin Air Filter
    • Refrigerant R134A - Servicing
  • HVAC Control Systems
    • Air Conditioning
    • Heating & Air Conditioning
    • On Board Diagnostic (OBD)
    • Refrigerant R134A - Servicing
• Maintenance
  • Procedures
    • Maintenance
    • Maintenance Procedures
    • Maintenance Reminder Light (Reset Procedures)
• Restraints
  • Air Bag, SRS
    • Air Bag Restraint Systems
    • Air Bag/SRS Component Inspection & Replacement Tables - EUROPEAN
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
    • Body On Board Diagnostic (OBD)
  • Passive Restraints
    • Body Interior - Except Cabriolet (68-Interior Equipment - 70-Interior Trim)
    • Body Interior - Except Cabriolet (72-Seat-Frames & 74-Seats-Upholstery, Covers)
• Steering
  • Manual Steering
    • Steering
    • Suspension, Wheels, Steering
  • Power Steering
    • Steering
    • Suspension, Wheels, Steering
  • Steering Column
    • Steering
    • Suspension, Wheels, Steering
  • Steering Gear
    • Suspension, Wheels, Steering
• Suspension
  • Electronic Suspension
    • Suspension, Wheels, Steering
  • Front Suspension
    • Suspension - Front
    • Suspension, Wheels, Steering
  • Rear Suspension
    • Suspension - Rear
    • Suspension, Wheels, Steering
  • Suspension Control Systems
    • Suspension, Wheels, Steering
  • Wheel Alignment
    • Specifications & Procedures
    • Suspension, Wheels, Steering
  • Wheels & Tire System
    • Suspension, Wheels, Steering
    • Wheel And Tire Guide
• Transmission
  • Automatic Trans
    • Automatic Transmission - Overhaul - O1J (CVT)
    • Automatic Transmission - Servicing - (01J, CVT)
    • Continuously Variable Transmission (CVT) 01J - On Board Diagnostic (OBD)
    • Continuously Variable Transmission (CVT) 01J
    • Continuously Variable Transmission (CVT) 01J - Internal Components, Servicing
    • Continuously Variable Transmission (CVT) 01J - Removal & Installation
    • Continuously Variable Transmission (CVT) 01J On Board Diagnostic (OBD)
• External Pages