Ford transit van DPF issue solved and the cause of failure found. The cause of the filter becoming wet was due to the drainage channel above the filter housing not been correctly installed after the last air filter change - van all fixed now and back on the road earning a living. We phoned the customer who was five minutes away and asked him to collect a air filter due to our suppliers not been able to deliver on time. We carried out the intake Air leak repair and filter fitting free of charge.