PEUGEOT 508 Handbook page 248

Checks
Starting prevented
every time the ignition is switched on, the
SeRVICe and engine diagnostic warning
lamps come on and the uReA warning lamp
flashes, accompanied by an audible signal and
the display of the message "emissions fault:
Starting 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 PeugeOt dealer or a qualified workshop.
246
Freezing of the AdBlue ® additive
the AdBlue ® additive freezes at
temperatures below around -11°C.
the SCR system includes a heater for
the AdBlue ® tank.
In exceptional circumstances (vehicle
kept for a long period at temperatures
that are constantly below -15°C), an
emissions control system fault alert may
be related to freezing of the AdBlue
your vehicle.
Park your vehicle in a warmer area for
a few hours until the additive becomes
liquid again.
the emissions alert does not go off
immediately, it will occur after several
mile of running.
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