SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | 4-cylinder diesel engine (2.0 l 4V, TDI Common-Rail) | Fuel preparation system Diesel injection | Lambda probe and pressure differential sender: component overview

Removing and installing Lambda probeG39 with Lambda probe heaterZ19

Removing and installing Lambda probe -G39- with Lambda probe heater -Z19-

t	Removing → Anchor

t	Fitting → Anchor

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Socket wrench 22 mm -T20202A-, see equivalent → Anchor

t	Torque wrench -VAG 1331-, see equivalent → Anchor.

Removing

–	Loosen the engine cover at the locations -arrows- and remove.

–	Disconnect electrical connection -4- for lambda probe -G39-.

–	Free the cable of the Lambda probe -G39- from its attachment.

–	Unscrew lambda probe -G39--3- with SW 22 socket wrench -T20202A-.

Installing

Carry out the assembly operations in reverse order to those described for the disassembly, taking the following into account:

Note

t	The screw thread on the new lambda probe is coated with a special paste; the paste must not get into the slots on the probe body.

t	With a used lambda probe, heat the bolt before coating only the thread with paste → Spare parts catalogue The paste must not get into the slots on the probe body.

t	When installing, the Lambda probe wiring must always be re-attached at the same locations to prevent it from coming into contact with the exhaust pipe.

l	Specified torque → Chapter „Assembly overview - front exhaust pipe with particulate filter“.

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