hi guys ive got to remove the exhaust down pipe off a friends focus to weld it up,the down pipe has a lambda senor in it,the question is will the EML light show if i disconect the sensor,or is is just a matter of unplugging it doing the repair and plugging it back in,car is focus 1.6.

cheers jeff.

 

simple un plug job

 

good stuff mate thank you.