Hi all
Had another look at this the other week, checked the additive level in the tank and its just under full. I tried disconnecting and reconnecting the additive ecu with the ignition on but no good. I then tried disconnecting it and then clearing the fault in the engine ecu. The fault code didnt come back untill i reconnected the additive ecu, so i thought it must be in the ecu. Renewed the ecu and reconfigured but no good fault code comes back with ignition on after about 10 secs. Has anybody got any thoughts on this or give me some advice.

Regards Jamie