hello all, could anyone give me any guidance to curing this fault.
i have a focus 1600 d year 2005 engine code hhda (90hp),
i have two fault codes logged p0380 heater plug control circuit permanent, and u0073 control bus communication off . the heater plug system works ok if i freeze the coolant temp sensor, though all appears to be all ok i have p0380 permanent.
the following have been checked, h/plugs, harness between plugs and enginebay fusebox, relay in fusebox, supplies and earths to relay.
the car also lacks power on the road and appears to be governed to approx 3 k, i also have a red lamp illuminated in the rev counter dial which is engine systems system warning lamp, not sure if this fault is being created due to the other problems or is a separate fault completely.