How to carry out replacement: Lambda Sensor 3.0 TDI quattro Audi A6 C6
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Change Audi A6 C6 2.4 Lambda Sensor yourself – manuals and video tutorials

How to change lambda sensor on AUDI A6 Saloon (4F2, C6) – replacement guide

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When to replace the Lambda Sensor on your AUDI A6
Recommended replacement interval for the part category Lambda sensor : 100000 km
Important!
This replacement procedure can be used for:
AUDI A6 Saloon (4F2, C6) RS6 quattro, AUDI A6 Saloon (4F2, C6) 3.0, AUDI A6 Saloon (4F2, C6) 3.0 quattro, AUDI A6 Saloon (4F2, C6) 4.2 FSI quattro, AUDI A6 Saloon (4F2, C6) S6 quattro, AUDI A6 Saloon (4F2, C6) 2.0 TFSI, AUDI A6 Saloon (4F2, C6) 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 A6 Saloon (4F2, C6) and other AUDI models
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Lambda sensor for A6 C6 Saloon (4F2) Petrol (580 hp)
Tools
Replacement: lambda sensor – AUDI A6 (4F2, C6). Tools you might need:
Electronic spray
High-temperature ceramic grease
Torque wrench
Drive socket # 10
22-mm oxygen sensor socket
Ratchet wrench
Thread tap
Fender cover
Buy tools
Replacement: lambda sensor – AUDI A6 (4F2, C6). 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 A6 (4F2, C6) – should be done with the engine switched off.
Carry out replacement in the following order:
  1. Step 1
    Open the bonnet.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    Lift the car using a jack or place it over an inspection pit.
    Step 4
    How to change Lambda Sensor on Audi A6 C6 2004 - 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 5
    How to replace AUDI A6 Saloon (4F2, C6) 3.0 TDI quattro 2005 Lambda Sensor - step-by-step manuals and video guides
    Remove the oxygen sensor housing cover.
  3. Step 6
    Audi A6 C6 2.0 TDI 2006 Lambda Sensor replacement: free workshop manuals
    Detach the oxygen sensor connector.
  4. Step 7
    Changing Lambda Sensor on AUDI A6 Saloon (4F2, C6) 2.7 TDI 2007 by yourself
    Unscrew the oxygen sensor fastener. Use a 22-mm oxygen sensor socket. Use a ratchet wrench.
  5. Step 8
    How to remove AUDI A6 2.0 TFSI 2008 Lambda Sensor - online easy-to-follow instructions
    Remove the oxygen sensor.
  6. Step 9
    How to replace Lambda Sensor on AUDI A6 Saloon (4F2, C6) 2009: download PDF manuals and video instructions
    Cut the thread for the new oxygen sensor. Use a thread tap. Use a ratchet wrench.
  7. Step 10
    Treat the oxygen sensor. Use high-temperature ceramic grease.
    Step 11
    How hard is it to do yourself: Lambda Sensor replacement on Audi A6 C6 3.0 TDI quattro 2010 - download illustrated guide
    Install the new oxygen sensor.
  8. Step 12
    Need to know how to renew Lambda Sensor on AUDI A6 2011? This free workshop manual will help you to do it yourself
    Tighten the oxygen sensor fastener. Use a 22-mm oxygen sensor socket. Use a torque wrench. Tighten it to 37 Nm torque.
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