Orange Light+ Exclamation Mark

[sikez]

Had a little problem this morning, Started up and yellow triangle with exclamation mark beeped up, Van does though still run ok.
Ran through a scan and well wished i hadn't,
Dtc's are as follows-
U1401-Alternator Lin Network-Registering a fault on the slave node of the alternator lin network-Permanent- What does this all mean??
P0494-Fan-Twin Speed-Incoherence between the setting(slow speed)and the status of the cooling fan....I have heared the fan running loud now and again??-Intermittent it says
P1434-Multiplexed additive pump fault-Intermittent it says
P1435-Multiplexed additive pump-Can network fault or pump fault-Intermittent it says
0362-Passenger's airbag deacative LED resistance too low...Resistance too low...then says it's distant?? do not have passenger airbag?
0997-Engine fusebox-fault in the horn control circuit
040-oil gauge fault

I have cleared all the faults above and so far apart from
U1401
0362
040
No other codes are stored, The three remaining do not put any warning's on but are always present when i read the codes.
I now have Diagbox v07.81 but very green to it, will i be able to check live data or pinpoint the exact issue's.
Vans a
2014 1.6 Hdi runs fine although has only done 1600miles since last October so that probably has not helped.
Any advice would be appreciated.

[Huskyxantia]

Check the loom from alternator some times dirty earths can cause silly issues or a break in any wires.

[sikez]

Many Thanks Huskyxantia,

I have had a look at the alternator, The little two pronged multi-plug on top as you look down towards the alternator are a little furred(green)
Possible issue maybe?
Apart from that following the looms everything else looks in order.

[Huskyxantia]

If you can clean it i would. Could be bushes in the unit wearing out too, i would also recheck every earth point that is exposed to water and make sure the points are clean too.