Audi TT Replacing Lambda sensor help

[Harry1972M]

Hi,
Can anyone give me an idea of how to replace No1 Lambda sensor on our 2001 TT 225 i.e. where is it and can I access it from the engine bay or do I need to be up on ramps.

Thanks in advance

[Cupramax]

Its underneath so you'll need it on a ramp, disconnect wire, unscrew sensor, reverse to refit.

[Harry1972M]

Many Thanks