Engine Top

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1. Fuel Pressure Regulator Valve -N276-
   • With biting edge for sealing
   • Cannot be used again
   • Removing and Installing. Refer to Fuel Pressure Sensor -G247-, REMOVING AND INSTALLING .
   • Tightening specification. Refer to .
2. Cylinder 1 Fuel Injector -N30-
   • Overview. Refer to OVERVIEW - HIGH PRESSURE PUMP .
3. Glow Plug 1 -Q10-
   • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
4. Cylinder 2 Fuel Injector -N31-
   • Overview. Refer to OVERVIEW - HIGH PRESSURE PUMP .
5. Camshaft Position Sensor -G40-
   • Component location
   • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
6. Glow Plug 2 -Q11-
   • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
7. Cylinder 3 Fuel Injector -N32-
   • Overview. Refer to OVERVIEW - HIGH PRESSURE PUMP .
8. Glow Plug 3 -Q12-
   • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
9. Fuel Temperature Sensor -G81-
10. Exhaust Gas Temperature Sensor 1 -G235-
    • Component location
    • Overview. Refer to appropriate service information.
11. Fuel Metering Valve -N290-
    • Component location
12. Charge Air Pressure Sensor 2 -G447-
    • Component location
13. Turbocharger Control Module 1 -J724-
    • At turbocharger
    • Overview. Refer to OVERVIEW - TURBOCHARGER, VEHICLES WITH TWO TURBOCHARGERS .
14. EGR Motor -V338-
    • Overview. Refer to appropriate service information.
15. Glow Plug 6 -Q15-
    • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
16. Cylinder 6 Fuel Injector -N84-
    • Overview. Refer to OVERVIEW - HIGH PRESSURE PUMP .
17. Glow Plug 5 -Q14-
    • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
18. Cylinder 5 Fuel Injector -N83-
    • Overview. Refer to OVERVIEW - HIGH PRESSURE PUMP .
19. Heated Oxygen Sensor -G39- connector
20. Fuel Pressure Sensor -G247-
    • With biting edge for sealing
    • Cannot be used again
    • Removing and Installing. Refer to Fuel Pressure Sensor -G247-, REMOVING AND INSTALLING .
    • Tightening specification. Refer to .
21. Cylinder 4 Fuel Injector -N33-
    • Overview. Refer to OVERVIEW - HIGH PRESSURE PUMP .
22. Glow Plug 4 -Q13-
    • Overview. Refer to OVERVIEW - GLOW PLUG SYSTEM .
23. Engine Coolant Temperature Sensor -G62-
    • Overview. Refer to OVERVIEW - ENGINE COOLANT TEMPERATURE SENSOR .
24. EGR Temperature Sensor -G98-
    • Overview. Refer to appropriate service information.
25. EGR Cooler Switch-Over Valve -N345-
26. Connector for Wastegate Bypass Regulator Valve -N75-
27. Connector for the Cylinder Head Coolant Valve -N489-
28. Wastegate Bypass Regulator Valve -N75-
29. Cylinder Head Coolant Valve -N489-
30. Restrictor in the Fuel Return Line
    • Checking. Refer to FUEL RETURN LINE RESTRICTOR, CHECKING .

Engine Front 

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1. 1 - Oil Level Thermal Sensor -G266-
   • Overview. Refer to OVERVIEW - OIL PAN/OIL PUMP .
2. 2 - Map Controlled Engine Cooling Thermostat -F265-
   • Integrated in the oil filter housing; cannot be replaced separately
3. 3 - Oil Temperature Sensor 2 -G664-
   • Component location
   • Overview. Refer to OVERVIEW - BELT PULLEY SIDE SEALING FLANGE .
4. 4 - Oil Pressure Switch -F22-
   • Overview. Refer to OVERVIEW - OIL FILTER HOUSING/OIL PRESSURE SWITCH .
5. 5 - Reduced Oil Pressure Switch -F378-
   • Overview. Refer to OVERVIEW - OIL FILTER HOUSING/OIL PRESSURE SWITCH .
6. 6 - EGR Cooler Switch-Over Valve -N345-
7. 7 - Intake Flap Motor -V157-
   • Overview. Refer to OVERVIEW - INTAKE MANIFOLD .
8. 8 - Throttle Valve Control Module -J338-
   • Overview. Refer to OVERVIEW - INTAKE MANIFOLD .
9. 9 - Turbine Switch-Over Valve -N529-
10. 10 - Engine Temperature Control Sensor -G694-
    • Component location
11. 11 - Oil Pressure Regulation Valve -N428-
    • Component location
    • Overview. Refer to OVERVIEW - OIL PAN/OIL PUMP .
12. A - Fuel Pump Control Module -J538-
    • Component location
13. B - Reducing Agent Injector -N474-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location
    • Overview. Refer to appropriate service information.
14. C - NOx Sensor -G295- with NOx Sensor Control Module -J583-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • NOx Sensor -G295- Component Location
    • NOx Sensor Control Module -J583- Component Location
    • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR, VEHICLES WITH A TURBOCHARGER WITH A SCR-SYSTEM, VERSION 1 .
15. D - NOx Sensor 2 -G687- with NOx Sensor Control Module 2 -J881-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)
    • Component location
    • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR, VEHICLES WITH A TURBOCHARGER WITH A SCR-SYSTEM, VERSION 1 .
16. E - Reducing Agent Metering System Control Module -J880-
    • Only installed on vehicles with a selective catalytic reduction system (SCR)

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1 - Brake Lamp Switch -F-

2 - Clutch Position Sensor - G476- with Clutch Pedal Starter Interlock Switch - F194- and Clutch Pedal Switch -F36- (manual transmission only)

Removing and Installing. Refer to appropriate service information. .

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1 - Coolant Fan Control Module -J293-

2 - Coolant Fan - V7- connector

3 - Coolant Fan 2 - V177- connector

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• -Item 2- on the cylinder head cover on the cylinder bank 1 (right).

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1. for the EGR Temperature Sensor -G98-
2. for the Map Controlled Engine Cooling Thermostat - F265-, Fuel Metering Valve -N290- and Map Controlled Engine Cooling Thermostat -V338-
3. Restrictor in the Fuel Return Line

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• -Item 2- in the high pressure pump.

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• -item 2- on left air guide pipe in the engine compartment.

Removing and installing. Refer to Charge Air Pressure Sensor -G31- / Intake Air Temperature Sensor -G42-, REMOVING AND INSTALLING .

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• -Item 1- on left front cylinder block.

Removing and installing. Refer to Engine Temperature Control Temperature Sensor -G694-, REMOVING AND INSTALLING .

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Removing and installing. Refer to Engine Coolant Temperature Sensor on Radiator Outlet -G83-, REMOVING AND INSTALLING .

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2 - Heated Oxygen Sensor -G39-

4 - Heated Oxygen Sensor -G39- connector

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1 - Exhaust Gas Temperature Sensor 3 -G495-

2 - Differential Pressure Sensor -G505-

3 - Connection from the Differential Pressure Sensor - G505- pressure pipe

• -Item 2- in the rear and on the right side of the engine.

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1 - Charge Air Pressure Sensor 2 -G447-

2 - Exhaust Gas Temperature Sensor 1 -G235-

The Turbocharger Control Module 1 -J724- can be seen on the left.

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1 - Exhaust Gas Temperature Sensor 1 -G235-

2 - Exhaust Gas Temperature Sensor 1 -G235- connector

Removing and installing. Refer to appropriate service information.

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1 - Exhaust Gas Temperature Sensor 4 Bank 2 - G649- connector

2 - Bank 2 Exhaust Gas Temperature Sensor 4 -G649-

Removing and installing. Refer to appropriate service information.

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NOx Sensor -G295- -arrow-

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2 - NOx Sensor Control Module - J583- connector

3 - NOx Sensor Control Module - J583-

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Courtesy of AUDI OF AMERICA, LLC

1 - Left Electrohydraulic Engine Mount Solenoid Valve -N144-

2 - Left Electrohydraulic Engine Mount Solenoid Valve -N144- connector

Removing and installing. Refer to ENGINE MOUNT, REMOVING AND INSTALLING .

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1 - Connector for the Right Electrohydraulic Engine Mount Solenoid Valve -N145-

2 - Right Electrohydraulic Engine Mount Solenoid Valve -N145-

Removing and installing. Refer to ENGINE MOUNT, REMOVING AND INSTALLING .

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