When to replace the Lambda Sensor on your AUDI A3
Recommended replacement interval for the part category Lambda sensor : 100000 km
This replacement procedure can be used for:
AUDI A3 Hatchback (8L1) 1.6, AUDI A3 Hatchback (8L1) 1.8 T, AUDI A3 Hatchback (8L1) S3 quattro, AUDI A3 Hatchback (8L1) 1.8 T quattro, AUDI A3 Hatchback (8L1) 1.8 T, AUDI A3 Hatchback (8L1) 1.8, AUDI A3 Hatchback (8L1) 1.6 View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

Replacement: lambda sensor – AUDI A3 (8L1). List of the tools you'll need:
Wire brush
WD-40 spray
Electronic spray
High-temperature ceramic grease
Torque wrench
Drive socket # 10
22-mm oxygen sensor socket
Thread tap
Ratchet wrench
Replacement: lambda sensor – AUDI A3 (8L1). AUTODOC experts recommend:
  • After replacing the oxygen sensor, clear the trouble code from the electronic control unit and let the ECU adapt itself to the new sensor.
  • Before getting down to work, start the engine and let it warm up to operating temperature.
  • Please note: all work on the car – AUDI A3 (8L1) – should be done with the engine switched off.
Carry out replacement in the following order:
  1. Step 1
    Lift the car using a jack or place it over an inspection pit.
    Step 2
    How to change Lambda Sensor on Audi A3 8l1 1996 - free PDF and video manuals
    Unscrew the fasteners of the oxygen sensor housing cover. Use a drive socket #10. Use a ratchet wrench.
  2. Step 3
    How to replace AUDI A3 Hatchback (8L1) 1.9 TDI 1997 Lambda Sensor - step-by-step manuals and video guides
    Remove the oxygen sensor housing cover.
  3. Step 4
    Audi A3 8l1 1.8 T 1998 Lambda Sensor replacement: free workshop manuals
    Detach the oxygen sensor connector.
  4. Step 5
    Changing Lambda Sensor on AUDI A3 Hatchback (8L1) S3 1.8 quattro 1999 by yourself
    Disconnect the oxygen sensor wiring.
  5. Step 6
    How to remove AUDI A3 1.8 2000 Lambda Sensor - online easy-to-follow instructions
    Clean the oxygen sensor fastener. Use a wire brush. Use WD-40 spray.
  6. Step 7
    How to replace Lambda Sensor on AUDI A3 Hatchback (8L1) 2001: download PDF manuals and video instructions
    Unscrew the oxygen sensor fastener. Use a 22-mm oxygen sensor socket. Use a ratchet wrench.
  7. Step 8
    How hard is it to do yourself: Lambda Sensor replacement on Audi A3 8l1 1.9 TDI 2002 - download illustrated guide
    Remove the oxygen sensor.
  8. Step 9
    Need to know how to renew Lambda Sensor on AUDI A3 2003? This free workshop manual will help you to do it yourself
    Clean the thread to prepare it for installing a new oxygen sensor. Use a thread tap. Use a ratchet wrench.
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DIY AUDI A3 Hatchback (8L1) Lambda Sensor replacement - online guide
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