Fiat 124 Spider 2019 Owner's Manual page 98

Warning!
A malfunctioning catalytic converter, as referenced above, can reach higher temperatures than in normal operating conditions. This can cause
a fire if you drive slowly or park over flammable substances such as dry plants, wood, cardboard, etc. This could result in death or serious
injury to the driver, occupants or others.
Caution!
Prolonged driving with the Malfunction Indicator Light (MIL) on could cause damage to the engine control system. It also could affect fuel
economy and driveability. If the MIL is flashing, severe catalytic converter damage and power loss will soon occur. Immediate service is
required.
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