Hi all

CITROEN XSARA PICASSO 2004
1587cc Engine code NFV
Water ingress into PCM multi plug

Have seen this today and am a bit stumped as to where the water has come from

Plastic bag type cover still in place covering multi-plugs.
Water only in first plug of PCM
Temperature sensor and switch on thermostat housing dry and shows no sign of water in plugs.

As can be seen in photo
Pin f3 missing
g2 & h2 heavy corrosion
Others showing signs of corrosion

Do not really want to replace PCM until I can cure the water problem

Any ideas where the water can get in?

Many thanks for looking

David