Lamba sensors

[Colin Browne]

Hi, 

have been experiencing trouble with the engine management light on my Jag V6 Petrol 07 plate, have replaced a Lamba sensors situated to left and right hand side to back of engine ( bulk head) reset the management system and the engine was running good until recently now once again management light has come on and code reads Bank 2 PO174also bank 1 PO171 I understand there are 4 Lamba sensors to the V6 but do the sensors all do the same job or are there different ones for spacific jobs ???

can you assist ???

 

[eddz]

I am also having problems with the lambda sensors.  I have a 2005. Can't pass the emissions test because of the hight O2, but my service guy says the lambda sensors seem to be OK.

 

[email protected]