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C4 - DS4 Owners :: Forums :: Citroen C4 Picasso and Grand C4 Picasso (B78) 2013 onward :: C4 Picasso and Grand C4 Picasso (B78) Problems and Issues

C4 Picasso 2014 - Fault code P1AA1

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Author Post
Fri Dec 27 2019, 10:01am
Member No: #39227
Joined: Feb 10 2015
Location: Guildford
Started getting Engine fault warning / Service on dashboard. Took it to Citroen dealer for diagnosis and they said "P1AA1 fault stored - on inspection water ingress in connector in nsf wheel arch". To fix it it with a new loom they want £340!
(a) even though the vehicle is out of warranty surely it shouldn't have water ingress any sensitive components unless its a design fault or seal failure?
(b) is there a quick fix I can do to take the wheel arch cover off and spray some contact cleaner/WD40 in the connectors then seal them with self-amalgamating tape?

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