WD-40 said:My car has Top Gear cats fitted (by previous owner).
I keep getting an engine check light coming on with the diagnostic code P2098 (post catalyst fuel trim system too lean bank 2).
My local indie thinks the cats have extenders to trick the O2 sensor readings and this is triggering the fault message.
Has anyone else had this problem with these exhausts/cats? Or know how to sort it?
I had the same issue, spent a couple of grand trying to sort it thinking it couldn't be the exhaust. Turned out to be a leaky gasket on the rear exhaust manifold.