audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Knock Sensor|Locations|Page 2705 > < Knock Sensor|Locations|Page 2703
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Knock Sensor: Service and Repair

Knock Sensors

CAUTION!
‹› Fuel system is under high pressure! Before opening high pressure components of the fuel injection system, pressure must be relieved

to residual pressure. Refer to => [ Before Opening High Pressure Fuel Injection System ] See: Engine, Cooling and
Exhaust/Engine/Cylinder Head Assembly/Fuel Pressure Release/Service and Repair.

‹› Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.

Installation location, connectors on the front of the engine

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Knock sensor 4 (G199) (blue connector)

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Knock Sensor 3 (G198) (white connector)

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Knock Sensor (KS) 1 (G61) (orange connector)

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Knock Sensor (KS) 2 (G66) (gray connector)

Installation location, knock sensors on the inside of the cylinder head

Knock Sensor|Locations|Page 2705 > < Knock Sensor|Locations|Page 2703