CITROËN C3 Handbook page 40

Instruments
In the event of detection of a fault with the SCR emissions control system
A system that prevents engine starting is activated automatically 650 miles (1 100 km) after confirmation of a fault with the SCR emissions
control system. Have the system checked by a CITROËN dealer or a qualified workshop as soon as possible.
In the event of detection of a fault
The AdBlue, SERVICE and engine self-
diagnostics warning lamps come on,
accompanied by an audible signal and the
display of the message "Emissions fault".
The alert is triggered when driving, when
the fault is detected for the first time, then
when switching on the ignition for subsequent
journeys, while the fault persists.
If it is a temporary fault, the alert
disappears during the next journey,
after a self-diagnostics test of the SCR
emissions control system.
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During an authorised driving phase
(between 650 miles and 0 miles) (1 100 km and 0 km)
If a fault with the SCR system is confirmed (after
30 miles (50 km) covered with the permanent
display of the message signalling a fault), the
SERVICE and engine self-diagnostics warning
lamps come on and the AdBlue warning lamp
flashes, accompanied by an audible signal and
the temporary display in the instrument panel
of "NO START IN" and a distance, indicating
the remaining range expressed in miles or
kilometres before engine starting is prevented
(e.g. "NO START IN 350 miles" means that
starting will be prevented in 350 miles).
While driving, this display appears every 30 seconds
while the fault with the SCR system persists.
The alert is repeated when switching on the
ignition.
You should go to a CITROËN dealer or a
qualified workshop as soon as possible.
Otherwise, you will not be able to restart your
engine.
Starting prevented
Every time the ignition is switched on, the
SERVICE and engine self-diagnostics warning
lamps come on and the AdBlue warning lamp
flashes, accompanied by an audible signal and
the temporary display of "NO START IN" and
0 miles or kilometres ("NO START IN 0 miles"
means that starting is prevented).
You have exceeded the authorised
driving limit: the starting prevention
system inhibits engine starting.
To be able to start the engine, you must call on
a CITROËN dealer or a qualified workshop.