When to replace the Lambda Sensor on your SEAT LEON
Recommended replacement interval for the part category Lambda sensor : 100000 km
Important!
This replacement procedure can be used for:
SEAT Leon Hatchback (1M1) 1.4 16V, SEAT Leon Hatchback (1M1) 1.8 20V T, SEAT Leon Hatchback (1M1) 1.6, SEAT Leon Hatchback (1M1) 1.6, SEAT Leon Hatchback (1M1) 1.8 20V View more

The steps may slightly vary depending on the car design.

How to change lambda sensor on SEAT LEON 1M1 [TUTORIAL AUTODOC]

video
Tools
Replacement: lambda sensor – Seat Leon 1M1. 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 – Seat Leon 1M1. 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 – Seat Leon 1M1 – should be done with the engine switched off.
Carry out replacement in the following order:
  1. Step 1
    How to change Lambda Sensor on Seat Leon 1m1 1999 - free PDF and video manuals
    Lift the car using a jack or place it over an inspection pit.
  2. Step 2
    How to replace SEAT Leon Hatchback (1M1) 1.9 TDI 2000 Lambda Sensor - step-by-step manuals and video guides
    Unscrew the fasteners of the oxygen sensor housing cover. Use a drive socket #10. Use a ratchet wrench.
  3. Step 3
    Seat Leon 1m1 1.6 16 V 2001 Lambda Sensor replacement: free workshop manuals
    Remove the oxygen sensor housing cover.
  4. Step 4
    Changing Lambda Sensor on SEAT Leon Hatchback (1M1) 1.9 TDI Syncro 2002 by yourself
    Detach the oxygen sensor connector.
  5. Step 5
    How to remove SEAT LEON 1.8 T Cupra R 2003 Lambda Sensor - online easy-to-follow instructions
    Disconnect the oxygen sensor wiring.
  6. Step 6
    How to replace Lambda Sensor on SEAT Leon Hatchback (1M1) 2004: download PDF manuals and video instructions
    Clean the oxygen sensor fastener. Use a wire brush. Use WD-40 spray.
  7. Step 7
    How hard is it to do yourself: Lambda Sensor replacement on Seat Leon 1m1 1.4 16V 2005 - download illustrated guide
    Unscrew the oxygen sensor fastener. Use a 22-mm oxygen sensor socket. Use a ratchet wrench.
  8. Step 8
    Need to know how to renew Lambda Sensor on SEAT LEON 2006? This free workshop manual will help you to do it yourself
    Remove the oxygen sensor.
  9. Step 9
    Changing of Lambda Sensor on Seat Leon 1m1 1999 won't be an issue if you follow this illustrated step-by-step guide
    Clean the thread to prepare it for installing a new oxygen sensor. Use a thread tap. Use a ratchet wrench.
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