Hi all, I recently had a new DPF DPS fitted and all was well for a while. Today the dreaded orange light came back on and the fault code reads, P2196 02 sens signal stuck, Rich Bank 1 sens 1.
Can anybody tell me where this sensor lives and if I'm now going to have to replace all of them. For a car that has only done 54K this one seems to have had an awful lot of bits replaced.
TIA
P.S. The car is running well and the exhaust pipes are spotless, no sooty deposit at all.