Which Oxygen Lambda Sensor is this URGENT!

[RS6]

I know there are two on the leon cupra r

I have the fault code 16517 Oxygen Lambda Sensor B1 S1: Response to slow P0133-35-10

thanks all going to order today if someone can help me

 

[53 Leon SX]

B1 S1 refers to Bank 1 sensor 1 which is the pre-cat lambda probe located underneath your bonnet somewhere. It is Five pin if I remember correctly, although there are actually six pins on the connector, I think one just remains unused.

 

[RS6]

got them both today so hopefully that will solve the problem

 

[53 Leon SX]

why did you order both?

 

[RS6]

well because i phoned seat dealership today, i have the full error code and P number from AMD before they did the reamp they scanned the car and got the fault code etc, seat couldn't clearly identify which sensor it was, they have a different P number down for it, ringing round aload of places you need to know which one it is etc so after doing alot of research on google this morning people think its the pre-cat sensor but no one is sure, sooo if im under the car over the weekend i would rather change them both at the same time that way i won't have to do it again in theory, its a big expense tbh but there you go

mucho thanks for your help 53 leon sx your probably right and its the precat one but i have a chance to change them both so here goes

 

[53 Leon SX]

Ah fair enough, if you got the money then nothing bad can come from changing both of them! Nice car btw