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Fuel Additive System Additive Adding Pump Short Circuit To Earth Dista

FAP diagbox

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#1 gecko1001



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Posted 15 July 2018 - 05:10 PM

Citroen C8 SX HDI 136  got this fault code  on Diagbox P1443 Engine management ECU

Fuel additive system additive adding pump short circuit to earth distant

I presume its saying a bad earth?


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#2 paul.h



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Posted 16 July 2018 - 11:19 AM

Elsewhere P1443 gives Evaporative Emission Control System Control Valve but maybe on the C8 it does not have this meaning.


Rather than a bad earth, it might be suggesting a wiring or connector fault or a fault with the pump. Are there any things to suggest your DPF is blocking up due to the eolys fluid not being dosed ?


I am not sure what you can do with Diagbox but maybe you could look at live data and see what information you have on the DPF such as regenerations, how blocked it is, the pressure differential across it, amount of eolys fluid calculated in the tank, maybe even test the additive pump.

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