EGR Temperature Sensor: Service and Repair

EGR Temperature Sensor

Special tools, testers and auxiliary items required

• Hose clamps up to 25 mm diameter (3094)

• Torque Wrench (V.A.G 1331)

• Drip tray (VAS 6208)

• Spring-type clip pliers (VAS 6362)

• 14 mm socket (T10401) (not illustrated)

Requirements

• Ignition switched off.

• Engine must be cold.

Procedure

• Assembly overview of vehicle from below:

- Remove the insulation pan..

- Drain the engine coolant. Refer to --> [ Cooling System, Draining and Filling ] [1][2]Cooling System, Draining and Filling.

• The coolant hoses indicated must be removed and moved to the side to perform assembly work on the EGR temperature sensor.

- Disconnect the coolant hoses from both connections - arrow A - and - arrow D -.





- Lay aside both coolant hoses - arrow B - and - arrow C - as illustrated.

• Assembly overview of engine compartment from above:

- Remove the engine cover. Refer to --> [ Engine Cover ] Engine Cover.

CAUTION!
Electronic components could be destroyed when the battery is disconnected. Follow the required steps when disconnecting the battery!

- With the ignition switched off, disconnect the ground wire - arrow - from the battery.





- Remove the air filter housing --> [ Air Filter Housing ] Air Filter Housing.

- Remove the battery and battery tray - arrows -.





- Disconnect the connector from the EGR temperature sensor - arrow A - and guide the wire out.





• Note the installation location of the lines and heat shield.

The illustration shows the EGR temperature sensor as seen from the engine compartment looking out from the transmission side - arrow - below brake master cylinder.





- Carefully guide 14 mm socket (T10401) with an extension onto the EGR temperature sensor.





- Make sure the wire from the EGR temperature sensor is guided into the groove on the 14 mm socket (T10401) - arrow A -.





- Loosen the EGR temperature sensor and remove it.

Install in reverse order of removal, noting the following:

• The EGR temperature sensor tightening specification is 20 Nm.

• Cut out the gasket and replace if it is damaged or leaks.

• Maintain the tightening specification.

CAUTION!
Install the heat shield mats in their original locations.

Make sure the entire connection is seated securely.

Always replace self-locking nuts, seals, gaskets and clamps.

Hoses are secured with spring-type clips.

Pliers for spring clamps (VAS 6362) or Hose clamp pliers (VAS 6340) are recommended for installing spring clamps.