See also:

Emergency start-up
If the Fiat CODE system fails to deactivate engine immobilising system the warning lights Yand U stay on and the engine cannot be started. To start the engine the emergency start-up can be performe ...

Engine
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General warnings
WARNING If the warning light does not turn on when turning the ignition key to MAR or if it stays on when travelling, this could indicate a failure in safety retaining systems; under this condit ...