My husband put a fuel cleaner (Upper Cylinder Lubricant and injector Cleaner - Lucas brand[u])[/u] into the diesel tank, then filled up completely with diesel. Immediately after running engine, a light came on. There were two error lights - one was the DPF light, which he reset and is now off; the second light refers to a P2585 error, and the accompanying message on the computer is '[i]Fuel additive control module warning lamp request[/i]'. When he attempted to reset the light, it did go off, but turned back on immediately after starting the engine again. It now remains on.
Any explanations / suggestions? Is it safe to drive the car? What repairs / changes need to be made?