Vauxhall 2009 Tigra Owner's Manual page 117

Control indicator Z for exhaust
Illuminates when the ignition is switched on
and during the start attempt. Goes off
shortly after the engine starts running.
Illuminated with the engine running
indicates a fault in the exhaust gas
cleaning system. The permitted emissions
may be exceeded. Contact a workshop
immediately.
Flashing with the engine running indicates
a fault which could lead to catalytic
converter damage. You may continue
driving without damage if you slow down
until flashing stops and the control
indicator comes on. Contact a workshop
immediately.
Control indicator A for engine electronics
Comes on for a few seconds after the
ignition is turned on.
If it illuminates when the engine is running,
there is a fault in engine or transmission
electronics. The electronic system switches
to an emergency running programme. Fuel
consumption may be increased and the
driveability of the vehicle may be impaired.
In some cases, faults can be eliminated by
switching off the engine and restarting. If
the control indicator comes on again when
the engine is running, contact a workshop
to eliminate the cause of the fault.
Driving and Operation
If it illuminates briefly, but does not recur, it
is of no significance.
Illumination of control indicator A can
indicate water in the diesel fuel filter. Check
fuel filter for possible water residue 3 162.
If it flashes after the ignition is switched on,
there is a fault in the immobiliser system.
The engine cannot be started 3 21.
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