Step 1: Raise and support the vehicle
Loosen front wheel nuts on a flat surface. Jack at the factory point, secure axle stands, and remove the undertray clips for exhaust access.
Difficulty
Intermediate
Est. time
1–2 hours
Tools
22 mm O2 socket, torque wrench, jack + axle stands, penetrant spray, gloves
Parts listed
2
Fuel
Petrol
Engine
1984cc
Year
2018
Platform
VOLKSWAGEN TIGUAN
Procedure
Step 2: Locate Bank 1 Sensor 1
Follow the exhaust from the turbo/downpipe — the upstream (pre-cat) sensor is the first lambda in the exhaust stream on bank 1 (firewall side on RHD).
Step 3: Release the connector
Press the grey locking tab and separate the connector. Route the wiring clear of heat shields before turning the sensor body.
Step 4: Remove the old sensor
Spray penetrant on threads and wait 5 minutes. Use a 22 mm oxygen sensor socket with a ratchet. Turn counter-clockwise — expect resistance from carbon.
Step 5: Install and torque the new sensor
Apply anti-seize to threads only (never the tip). Hand-start to avoid cross-threading. Torque to 45 Nm unless your sensor manufacturer specifies otherwise.
Step 6: Clear adaptations and verify
Reassemble undertray, lower the car, and clear fault codes. Drive until readiness monitors complete — check live fuel trim stays within ±10%.
Parts & materials
- Copper exhaust gasket paste (optional)×1
- Oxygen (lambda) sensor B1S1(06K906262A)×1
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