Citroen C5 intermittant failure to start

Car: Citroen C5
Variant: Hdi estate
Model Year: 2004
The car fails to start at times and it was diagnosed as a fuel pump failure by RAC, however when transported to garage it started first time on arrival. On failure to start over the course of several hours, when left for a day it consequently started first time. It now fails to start on an increasingly short interval. ECU problem perhaps? any advise welcome.
Posted: Dec 21, 2018 (5 years ago)
first step is get it scanned.
Posted Dec 22, 2018 (5 years ago)
When was fuel filter last changed ?
Posted Dec 22, 2018 (5 years ago)

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