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C4 - DS4 Owners :: Forums :: C4 2011 (B7) DS4 and DS4 CROSSBACK :: Problems and issues
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C4 P1A9C
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Author Post
gango67   
Thu Oct 31 2024, 02:19pm
Member No: #53374
Joined: Mar 20 2019
Location: Torbay
 Hi all
Hopefully someone can assist my stop / start is not working and have fault code P1A9C in engine ECU I know this is power accumulator poor health I have looked in diagabox at battery info as attached do I need to replace battery or the ultra capacitor in n/s front wing
 

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