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C4 error P1A9C
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Author Post
Mel4   
Tue Nov 08 2022, 06:10am
Member No: #60243
Joined: Nov 08 2022
Location: Brisbane
 Hi,
I have this error P1A9C in my 2013 Citroen C4 Seduction ehdi i have changed the Stop start capacitor and checked all nuts and wiring and error still comes up. Is there a fix for this problem.
tomandjo2   
Sat Nov 12 2022, 11:23am
Member No: #20851
Joined: Jul 17 2011
Location: Cambridge
 Did you delete the fault code?

How old is your battery? Could mean you need a new stop start battery, over time it will gradually deteriate and when it has deteriated to a certain level the top start function will no longer work until battery replaced.
Mel4   
Sat Nov 12 2022, 05:58pm
Member No: #60243
Joined: Nov 08 2022
Location: Brisbane
 Hi I have replaced the battery with a new AGM stop start battery before changing the capacitor. Is there a fix for this problem.
Mel4   
Sat Nov 12 2022, 06:02pm
Member No: #60243
Joined: Nov 08 2022
Location: Brisbane
 I have deleted the fault code but it comes back after the engine is switched off.
tomandjo2   
Mon Nov 14 2022, 01:39pm
Member No: #20851
Joined: Jul 17 2011
Location: Cambridge
 Do you have to tell the car you replaced the battery?

I know with BMW stop start batteries the car has to be reset that a new battery has been installed.
Mel4   
Tue Nov 15 2022, 02:59am
Member No: #60243
Joined: Nov 08 2022
Location: Brisbane
 Hi I am not sure my C4 has been on a scan tool twice and they and they have told my car has Error P1A9C after changing the battery and replacing the capacitor.
Do you have to tell the car about the accumulator capacitor has been replaced.
Nobody can seem to tell me that yet.
 

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