How to carry out replacement: Lambda Sensor 4.2 quattro Audi A8 D2
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Change Audi A8 D2 4.2 quattro Lambda Sensor yourself – manuals and video tutorials

How to change lambda sensor on AUDI A8 (4D2, 4D8) – replacement guide

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When to replace the Lambda Sensor on your AUDI A8
Recommended replacement interval for the part category Lambda sensor : 100000 km
Important!
This replacement procedure can be used for:
AUDI A8 (4D2, 4D8) 4.2 quattro, AUDI A8 (4D2, 4D8) S8 quattro, AUDI A8 (4D2, 4D8) 3.3 TDI quattro, AUDI A8 (4D2, 4D8) 3.7, AUDI A8 (4D2, 4D8) 3.7 quattro, AUDI A8 (4D2, 4D8) 4.2 quattro … 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

All the parts you need to replace – Lambda Sensor for A8 (4D2, 4D8) and other AUDI models
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Tools
Replacement: lambda sensor – AUDI A8 (4D2, 4D8). 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
Buy tools
Replacement: lambda sensor – AUDI A8 (4D2, 4D8). 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 A8 (4D2, 4D8) – 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 A8 D2 1994 - 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 A8 (4D2, 4D8) 4.2 quattro 1995 Lambda Sensor - step-by-step manuals and video guides
    Remove the oxygen sensor housing cover.
  3. Step 4
    Audi A8 D2 S8 quattro 1996 Lambda Sensor replacement: free workshop manuals
    Detach the oxygen sensor connector.
  4. Step 5
    Changing Lambda Sensor on AUDI A8 (4D2, 4D8) 2.5 TDI 1997 by yourself
    Disconnect the oxygen sensor wiring.
  5. Step 6
    How to remove AUDI A8 2.8 quattro 1998 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 A8 (4D2, 4D8) 1999: 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 A8 D2 2.8 2000 - download illustrated guide
    Remove the oxygen sensor.
  8. Step 9
    Need to know how to renew Lambda Sensor on AUDI A8 2001? 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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