X-Type (X400) 2001 - 2009
Hi all,
I've got an '05 (55) 2.5 V6 estate with 103,800mi on the clock and every few months the orange engine light comes on with the P0420 code (bank 1 cat efficiency below threshold). This started after coil pack water ingress caused a misfire on two bank 1 cylinders back in Jan. I'm guessing...