Removing and installing lambda probe 1 before catalytic converter GX10/lambda probe 1 after catalytic converter GX7 — VW
Removing and installing lambda probe 1 before catalytic converter GX10/lambda probe 1 after catalytic converter GX7 on VW: factory workshop procedure for.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
🔧 Engine codes this applies to
📋 Procedure
Removing and installing
lambda probe 1 before catalytic converter
GX10
/
lambda probe 1 after catalytic converter
GX7
Lambda probe 1 before catalytic converter
GX10
consists of
Lambda probe
G39
Lambda probe heater
Z19
Lambda probe 1 after catalytic converter
GX7
consists of
Lambda probe after catalytic converter
G130
Lambda probe heater 1 after catalytic converter
Z29
Special tools and workshop equipment required
Lambda probe open ring spanner set
3337
Removing
Unplug corresponding electrical connector:
For
Lambda probe 1 after catalytic converter
GX7
.
For
Lambda probe 1 before catalytic converter
GX10
.
Lambda probe 1 before catalytic converter
GX10
item 2
:
Remove engine cover panel
Chapter
.
Unscrew
Lambda probe 1 before catalytic converter
GX10
using tool from
Lambda probe open ring spanner set
3337
.
Lambda probe 1 after catalytic converter
GX7
item 1
:
Remove catalytic converter
Chapter
.
Unscrew
Lambda probe 1 after catalytic converter
GX7
using tool from
Lambda probe open ring spanner set
3337
.
Installing
Installation is carried out in the reverse order; note the following:
Note
New lambda probes are coated with an assembly paste. This paste must not get into the slots on the Lambda probe body.
In the case of a used lambda probe grease only the thread with high-temperature paste. This paste must not get into the slots on the Lambda probe body. High-temperature paste
Electronic Parts Catalogue
.
During installation, the electrical connecting cable of the Lambda probe must be attached in the same places. The electrical wiring must be prevented from touching the exhaust pipe.
Vehicles as of July 2015
If oxygen sensor has been renewed, erase learnt values and adapt oxygen sensor to engine control unit using
vehicle diagnostic tester
.
Switch on ignition and select the following menu options on
vehicle diagnostic tester
:
01 - Engine electronics
Guided Functions
01 - Lambda probe adaption
All vehicles (continued)
Specified torques
Chapter
“
Assembly overview - Lambda probe
”
General body repairs, exterior
Rep. gr.
66
Noise insulation; Assembly overview - noise insulation
.
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.