decat - engine managment light now on

[B4KRX]

i have just had a race cat fitted and downpipe and remap my engine managment light is on is there a sensor for my emisions is that why its on?? please help lol

 

[RichN]

We can all have a guess...

..or you can get a laptop + cable and find out why, using Vag-Com ;-) (or ask someone local to help)

Right I'll guess first - did they plug the lambda sensor in?

 

[acidstrato]

thats my guess to, it hasnt been plugged back in

 

[rhysox]

in my experience, lambda sensor doesn't throw up a light, just a code. my light is on all the time due to SAI removal, not the lambda

 

[ibizacupra]

light also.. EPC

 

[Importcupra]

is your car mapped? I thought you had to have the second lamda mapped out?