2015 Audi A6 Service and Repair Manual

This 2015 Audi A6 Service and Repair Manual Covers

Engine & Drivetrain

• 1.8L TFSI turbocharged petrol engine service and repair (selected markets)
• 2.0L TFSI turbocharged petrol engine servicing
• 3.0L TFSI V6 Supercharged engine servicing
• 2.0L TDI turbo diesel engine servicing
• 3.0L TDI V6 turbo diesel engine servicing
• Fuel injection and turbocharger diagnostics
• Supercharger system diagnostics (3.0 TFSI)
• Engine cooling system servicing
• Engine lubrication system repairs
• Exhaust and emissions control system diagnostics
• Start/Stop system diagnostics (where equipped)
• 6-speed manual transmission servicing (selected markets)
• 7-speed S tronic dual-clutch transmission diagnostics and repair
• 8-speed Tiptronic automatic transmission servicing
• Front-wheel drive and quattro drivetrain servicing
• Centre differential, propeller shaft, rear differential, and CV joint repairs

Braking Systems

• Hydraulic brake system servicing
• Anti-lock Braking System (ABS) diagnostics
• Electronic Stability Control (ESC) diagnostics
• Electronic Parking Brake (EPB) servicing
• Auto Hold system diagnostics
• Brake Assist system diagnostics
• Brake pad, brake disc, and caliper replacement procedures
• Brake hydraulic system bleeding

Chassis & Suspension

• Front five-link suspension repairs
• Rear trapezoidal-link suspension servicing
• Standard, Sport, and Adaptive Air Suspension diagnostics (where equipped)
• Audi Drive Select diagnostics
• Adaptive damping suspension servicing (where equipped)
• Wheel alignment specifications
• Wheel bearing replacement procedures
• Suspension component inspection and troubleshooting

Electrical & Wiring

• Complete factory wiring diagrams
• Battery Energy Management (BEM) diagnostics
• CAN Bus, LIN Bus, FlexRay, and MOST communication diagnostics
• Gateway control module diagnostics
• Body Control Module (BCM) diagnostics
• Audi MMI Navigation Plus diagnostics
• Bluetooth®, Audi Music Interface (AMI), SD card, USB, and multimedia diagnostics
• Xenon Plus, LED, and Matrix LED headlamp diagnostics (where equipped)
• Power tailgate diagnostics (Avant models)

Air Conditioning & HVAC

• Dual-zone and four-zone automatic climate control diagnostics (model dependent)
• Air conditioning compressor servicing
• Refrigerant recovery and recharge procedures
• HVAC control module diagnostics
• Air quality sensor testing
• Heating and ventilation system repairs

Body & Interior

• Interior trim removal and installation
• Dashboard servicing procedures
• Sedan and Avant body repair procedures
• Power tailgate servicing (Avant models)
• Door control module diagnostics
• Power window and central locking repairs
• Exterior lighting system servicing
• Airbag and occupant restraint system diagnostics
• Electrically adjustable, heated, ventilated, and memory seat repairs (where equipped)
• Body panel alignment and repair information

Driver Assistance Systems

• Adaptive Cruise Control diagnostics (where equipped)
• Audi Pre Sense Basic diagnostics (where equipped)
• Audi Side Assist (Blind Spot Monitoring) diagnostics (where equipped)
• Audi Active Lane Assist diagnostics (where equipped)
• Night Vision Assistant diagnostics (where equipped)
• Parking System Plus diagnostics
• Rear-view and Top View camera diagnostics (where equipped)
• Front and rear parking sensor diagnostics
• Steering angle sensor calibration

Diagnostics & Troubleshooting

• ODIS factory diagnostic procedures
• Guided fault-finding routines
• Diagnostic Trouble Code (DTC) lookup procedures
• ECU coding and adaptation procedures
• Software update procedures
• Component protection diagnostics
• Sensor and actuator testing
• Step-by-step troubleshooting workflows

Common Error Codes Covered

This manual includes diagnostic procedures for common Audi fault codes applicable to the 2015 Audi A6.

Engine Codes

• P0299 – Turbocharger Underboost Condition
• P0171 – System Too Lean (Bank 1)
• P0300 – Random/Multiple Cylinder Misfire Detected
• P0401 – Exhaust Gas Recirculation Flow Insufficient Detected (diesel models)
• P2457 – Exhaust Gas Recirculation Cooling System Performance

Transmission Codes

• P0726 – Engine Speed Input Circuit Range/Performance
• P1735 – S tronic Clutch Adaptation Fault
• P17BF – Hydraulic Pump Protection Fault

ABS & Chassis Codes

• C0031 – Left Front Wheel Speed Sensor Fault
• C10AC – Electronic Parking Brake Malfunction
• C1146 – Steering Angle Sensor Calibration Fault

Network Communication Codes

• U0100 – Lost Communication with Engine Control Module
• U1113 – Function Restriction Due to Missing Message

Body Control Codes

• B2000 – Control Module Internal Malfunction
• B1263 – Rain and Light Sensor Fault
• B11CF – Interior Lighting Circuit Fault

The manual also includes hundreds of manufacturer-specific diagnostic trouble codes, factory wiring diagrams, ECU coding procedures, software update information, component testing specifications, guided diagnostics, and repair instructions.

Who Is This Manual For?

• Professional automotive workshops
• Audi dealership technicians
• Independent repair garages
• Mobile mechanics
• Automotive engineering students
• DIY enthusiasts

If you are servicing, maintaining, diagnosing, or repairing a 2015 Audi A6, this factory workshop manual provides the detailed repair procedures, wiring diagrams, technical specifications, diagnostic information, and repair procedures required to maintain the vehicle to Audi factory standards.