Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures (A4 / S4)
  • DTC Index - Engine Code(S): CPMA & CPMB (Sedan)
  • Electrical Component Locations
    • A4 QUATTRO - Component Locations
  • Fluids
  • Technical Bulletins
    • Safety Recalls
    • Tech Tips
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Anti-Theft Systems
    • Front Doors & Central Locking System (Sedan)
    • Immobilizer & Trailer Hitch (Sedan)
    • Interior Lights & Switches (Sedan)
    • On Board Diagnostic - Access/Start Authorization (Sedan)
  • Communication Devices
    • Communication (Sedan)
    • Interior Lights & Switches (Sedan)
    • On Board Diagnostic - Access/Start Authorization (Sedan)
    • On Board Diagnostic - Infotainment & Navigation (Sedan)
  • Cruise Control Systems
    • Charging System & Cruise Control System (Starter, Generator & Cruise Control) (Sedan)
    • On Board Diagnostic - Adaptive Cruise Control System (Sedan)
  • Entertainment Systems
    • Instruments (Sedan)
    • Interior Lights & Switches (Sedan)
    • On Board Diagnostic - AUDI Infotainment (Sedan)
  • Exterior Lights
    • Exterior Lights & Switches (Sedan)
    • Hid Headlamp Usage & Safety Precautions (Sedan)
    • On Board Diagnostic - Exterior Lamps (Sedan)
  • Gauges & Instrument Panels
    • Instruments (Sedan)
    • Interior Equipment (Sedan)
    • Interior Trim (Sedan)
  • Horns
    • Communication (Sedan)
    • Instruments (Sedan)
  • Infotainment
    • Instruments (Sedan)
    • Interior Lights & Switches (Sedan)
    • On Board Diagnostic - AUDI Infotainment (Sedan)
    • On Board Diagnostic - Infotainment & Navigation (Sedan)
  • Interior/Exterior Trim
    • Exterior Equipment (Sedan)
    • Interior Equipment (Sedan)
    • Interior Trim (Sedan)
  • Interior/Illumination Lights
    • Interior Lights & Switches (Sedan)
    • On Board Diagnostic - Interior Lamps (Sedan)
  • Mirrors
    • Exterior Equipment (Sedan)
    • Interior Equipment (Sedan)
  • Seats
    • Seat Frames (Sedan)
    • Seat Upholstery & Covers (Sedan)
  • Steering Column Switches
    • Exterior Lights & Switches (Sedan)
    • Interior Equipment (Sedan)
  • Window Motors & Regulators
    • Exterior Equipment (Sedan)
    • Front Doors & Central Locking System (Sedan)
    • Glass & Window Regulators (Sedan)
    • Rear Doors (Sedan)
  • Wiper/Washer Systems
    • On Board Diagnostic - Wiper & Washer Systems (Sedan)
    • Windshield Washer System - General Information (Sedan)
    • Wiper/Washer Systems (Sedan)
• Body & Frame
  • Door Locks
    • Front Doors & Central Locking System (Sedan)
    • Immobilizer & Trailer Hitch (Sedan)
    • Interior Lights & Switches (Sedan)
    • On Board Diagnostic - Access/Start Authorization (Sedan)
  • Exterior Body Panels
    • Body Front (Sedan)
    • Bumpers (Sedan)
    • Exterior Body Panels (Hood, Lids) (Sedan)
    • Exterior Equipment (Sedan)
    • Front Doors & Central Locking System (Sedan)
    • Rear Doors (Sedan)
  • Exterior/Interior Trim
    • Exterior Equipment (Sedan)
    • Interior Equipment (Sedan)
    • Interior Trim (Sedan)
  • Frames, Subframes & Crossmembers
    • Exterior Equipment (Sedan)
  • Mirrors
    • Exterior Equipment (Sedan)
    • Interior Equipment (Sedan)
  • Seats
    • Seat Frames (Sedan)
    • Seat Upholstery & Covers (Sedan)
  • Sun Roof/T-Top/Convertible Top
    • Sunroof (Sedan)
  • Towing Systems
    • Exterior Equipment (Sedan)
    • Immobilizer & Trailer Hitch (Sedan)
    • Interior Lights & Switches (Sedan)
  • Windows
    • Exterior Equipment (Sedan)
    • Front Doors & Central Locking System (Sedan)
    • Glass & Window Regulators (Sedan)
    • Rear Doors (Sedan)
• Brakes
  • Anti-Lock Brakes
    • Antilock Brake System (Sedan) (As Of 01.2014)
    • Antilock Brake System (Sedan) (As Of 09.2011)
    • Brake System - General & Technical Data (Sedan) (As Of 01.2014)
    • Brake System - Hydraulic Components (Sedan) (As Of 01.2014)
  • Brakes Control Systems
    • Brake System - General & Technical Data (Sedan) (As Of 01.2014)
    • Brake System - Hydraulic Components (Sedan) (As Of 01.2014)
  • Mechanical - Hydraulic
    • Brake System - General & Technical Data (Sedan) (As Of 01.2014)
    • Brake System - Hydraulic Components (Sedan) (As Of 01.2014)
    • Brake System - Mechanical Components (Sedan) (As Of 01.2014)
  • Parking Brake System
    • Brake System - General & Technical Data (Sedan) (As Of 01.2014)
    • Brake System - Hydraulic Components (Sedan) (As Of 01.2014)
    • Brake System - Mechanical Components (Sedan) (As Of 01.2014)
  • Traction Control
    • Antilock Brake System (Sedan) (As Of 01.2014)
    • Antilock Brake System (Sedan) (As Of 09.2011)
    • Brake System - General & Technical Data (Sedan) (As Of 01.2014)
    • Brake System - Hydraulic Components (Sedan) (As Of 01.2014)
• Drivelines & Axles
  • Axle Shafts
    • Front Suspension (Sedan)
    • Rear Final Drive 0BC, 0BD, 0BE & 0BF - General & Technical Data (Sedan)
    • Rear Final Drive 0BD - General & Technical Data (Sedan)
    • Rear Final Drive 0BF & 0BE - Sport Differential - General & Technical Data (Sedan)
    • Rear Suspension (Sedan)
  • Differentials & Drive Axles
    • Final Drive & Differential - Automatic Transmission 0BK (Sedan)
    • Final Drive & Differential - Rear Final Drive - Sport Differential (Sedan)
    • Final Drive & Driveshaft - Rear Final Drive (Sedan) ( (As Of 05.2010)
    • Final Drive & Driveshaft - Rear Final Drive (Sedan) (As Of 05.2015)
    • Rear Final Drive 0BC, 0BD, 0BE & 0BF - General & Technical Data (Sedan)
    • Rear Final Drive 0BD - General & Technical Data (Sedan)
    • Rear Final Drive 0BF & 0BE - Sport Differential - General & Technical Data (Sedan)
  • Driveshaft & Universal Joints
    • Final Drive & Differential - Rear Final Drive - Sport Differential (Sedan)
    • Final Drive & Driveshaft - Rear Final Drive (Sedan) ( (As Of 05.2010)
    • Final Drive & Driveshaft - Rear Final Drive (Sedan) (As Of 05.2015)
  • Wheel Hubs
    • Rear Suspension (Sedan)
• Electrical
  • Body Electrical
    • Body Exterior - General & Technical Data (Sedan)
    • Electrical Equipment - General & Technical Data (Sedan)
    • OEM Connector End Views
    • Wires - General Information (Sedan)
    • Wiring (Sedan)
  • Charging Systems
    • Charging System & Cruise Control System (Starter, Generator & Cruise Control) (Sedan)
    • Electrical Equipment - General & Technical Data (Sedan)
    • Electrical System - (Battery, Starter & Generator) (Sedan)
  • A4 QUATTRO - Component Locations
  • Gauges
    • Instruments (Sedan)
    • Interior Equipment (Sedan)
    • Interior Trim (Sedan)
  • Horns
    • Communication (Sedan)
    • Instruments (Sedan)
  • Motors, Switches, Relays
    • Body Exterior - General & Technical Data (Sedan)
    • Electrical Equipment - General & Technical Data (Sedan)
    • OEM Connector End Views
    • Wires - General Information (Sedan)
    • Wiring (Sedan)
  • Starter
    • Charging System & Cruise Control System (Starter, Generator & Cruise Control) (Sedan)
    • Electrical System - (Battery, Starter & Generator) (Sedan)
  • Wiring Diagrams
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Auxiliary Emission Control Systems
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Blowers, Superchargers & Turbochargers
    • 2.0L - MULTIPORT Fuel Injection - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Turbocharger & Supercharger - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
  • Cooling Fan
    • 2.0L - Cooling System - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Cooling System (Mechanical)
    • 2.0L - Cooling System - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Engine Mechanical, Fuel Injection & Ignition - General & Technical Data - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
  • Exhaust
    • 2.0L - Engine Mechanical, Fuel Injection & Ignition - General & Technical Data - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Exhaust System & Emission Controls - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Fuel System
    • 2.0L - Engine Mechanical, Fuel Injection & Ignition - General & Technical Data - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
    • Fuel Supply - Engine Code(S): CAEB, CAED, CALA, CCBA, CGXC, CPMA, CPMB & CTUB (Sedan)
    • Fuel Supply - Technical Data (Sedan)
  • Lubrication System
    • 2.0L - Lubrication - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
  • Mechanical
    • 2.0L - Crankshaft & Cylinder Block - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Engine Assembly - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Engine Mechanical, Fuel Injection & Ignition - General & Technical Data - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Starter
    • Charging System & Cruise Control System (Starter, Generator & Cruise Control) (Sedan)
    • Electrical System - (Battery, Starter & Generator) (Sedan)
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Engine Control Systems
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Fuel Delivery
    • 2.0L - Engine Mechanical, Fuel Injection & Ignition - General & Technical Data - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
    • Fuel Supply - Engine Code(S): CAEB, CAED, CALA, CCBA, CGXC, CPMA, CPMB & CTUB (Sedan)
    • Fuel Supply - Technical Data (Sedan)
  • Ignition System
    • 2.0L - Engine Mechanical, Fuel Injection & Ignition - General & Technical Data - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
    • 2.0L - Ignition/Glow Plug System - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
  • Mode 6
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Pin Voltage Charts
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB - Transmission DTC Tables & Diagnostic Procedures (Sedan)
  • Specifications
    • Firing Order & Cylinder Identification
  • System
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB - Engine DTC Tables (Engine Control Module -- (2013-2014 My) & Engine Control Module -- (2015 My)) (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB - Engine DTC Tables (Engine Control Module -- (2016 My)) (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Testing & Diagnosis
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB - Engine DTC Tables (Engine Control Module -- (2013-2014 My) & Engine Control Module -- (2015 My)) (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB - Engine DTC Tables (Engine Control Module -- (2016 My)) (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
  • Tune-Up
    • 2.0L - Engine Mechanical, Fuel Injection & Ignition - General & Technical Data - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
    • 2.0L - Ignition/Glow Plug System - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan)
• 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
  • 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 - Engine Code(S): CPMA & CPMB (Sedan)
  • Electrical
    • Electrical System - (Battery, Starter & Generator) (Sedan)
    • 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
    • Automatic Transmission - General & Technical Data - Transmission Code(S): 0BK (Sedan)
    • CANADIAN Model Cross-Reference
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • Automatic Stop/Start Disable
    • Wiring (Sedan)
  • Reset Procedures
    • ATEQ TPMS Reset Procedure (11)
    • BARTEC TPMS Reset Procedure
    • Maintenance Reminder Light (Reset Procedures)
    • Tire Pressure Monitor Systems
  • Specifications Index
    • Common Specs & Procedures (A4 / S4)
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Towing
    • Automatic Transmission - General & Technical Data - Transmission Code(S): 0BK (Sedan)
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • A/C Compressor
    • Heating, Ventilation & Air Conditioning - General & Technical Data (Sedan)
  • General Servicing
    • Cabin Air Filter
    • Heating, Ventilation & Air Conditioning - General & Technical Data (Sedan)
    • Refrigerant R134A Servicing (1 Of 2) (Sedan)
    • Refrigerant R134A Servicing (2 Of 2) (Sedan)
  • HVAC Control Systems
    • Heating, Ventilation & Air Conditioning - General & Technical Data (Sedan)
    • Heating, Ventilation & Air Conditioning (1 Of 2) (Sedan)
    • Heating, Ventilation & Air Conditioning (2 Of 2) (Sedan)
    • Refrigerant R134A Servicing (1 Of 2) (Sedan)
    • Refrigerant R134A Servicing (2 Of 2) (Sedan)
• Maintenance
  • Procedures
    • Fluid Capacity Tables (Sedan)
    • Maintenance Intervals (Sedan)
    • Maintenance Procedures (Sedan)
    • Maintenance Reminder Light (Reset Procedures)
• Restraints
  • Air Bag, SRS
    • Body Interior - General & Technical Data (Sedan)
    • Passenger Protection, Airbags, Seat Belts (Sedan)
  • Passive Restraints
    • Body Interior - General & Technical Data (Sedan)
    • Passenger Protection, Airbags, Seat Belts (Sedan)
• Steering
  • Manual Steering
    • Steering (Sedan)
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
  • Power Steering
    • Steering (Sedan)
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
  • Steering Column
    • On Board Diagnostic - Access/Start Authorization (Sedan)
    • Steering (Sedan)
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
  • Steering Control Systems
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
  • Steering Gear
    • Steering (Sedan)
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
  • Steering Linkage
    • Steering (Sedan)
• Suspension
  • Electronic Suspension
    • Self-Leveling Suspension (Sedan)
  • Front Suspension
    • Front Suspension (Sedan)
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
    • Wheel & Tire Guide (Sedan)
    • Wheels & Tire General Information (Sedan)
    • Wheels, Tires & Wheel Alignment (Sedan)
  • Rear Suspension
    • Rear Suspension (Sedan)
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
    • Wheel & Tire Guide (Sedan)
    • Wheels & Tire General Information (Sedan)
    • Wheels, Tires & Wheel Alignment (Sedan)
  • Wheel Alignment
    • AUDI Wheel Alignment Specifications - A4
    • AUDI Wheel Alignment Specifications - A4 QUATTRO
    • Wheels, Tires & Wheel Alignment (Sedan)
  • Wheels & Tire System
    • Exterior Equipment (Sedan)
    • Front Suspension (Sedan)
    • Suspension, Wheels & Steering - General & Technical Data (Sedan)
    • Wheel & Tire Guide (Sedan)
    • Wheels & Tire General Information (Sedan)
    • Wheels, Tires & Wheel Alignment (Sedan)
• Transmission
  • Automatic Trans
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
    • Automatic Transmission - General & Technical Data - Transmission Code(S): 0BK (Sedan)
    • Controls & Housing - Automatic Transmission 0BK (Sedan)
    • Final Drive & Differential - Automatic Transmission 0BK (Sedan)
    • Gears & Hydraulic Controls - Automatic Transmission 0BK (Sedan)
    • Torque Converter - Automatic Transmission 0BK (Sedan)
  • Clutch
    • Gears & Hydraulic Controls - Automatic Transmission 0BK (Sedan)
  • Transmission Control Systems
    • 2.0L - Generic Scan Tool - Engine Code(S): CPMA & CPMB (1 Of 2) (Sedan)
    • Controls & Housing - Automatic Transmission 0BK (Sedan)
• External Pages