RAM 1500 Owner's Manual page 300

298 UNDERSTANDING YOUR INSTRUMENT PANEL
If the vehicle is not ready for emissions testing the light
will come on when the ignition is first turned on and
remain on for 15 seconds, then blink for 5 seconds, and
remain on until the vehicle is started. If the bulb does not
come on during starting, have the condition investigated
promptly.
If this light comes on and remains on while driving, it
suggests a potential engine control problem and the need
for system service.
Although your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.
CAUTION!
Prolonged driving with the MIL on could cause dam-
age to the engine control system. It also could affect
fuel economy and drivability. If the MIL is flashing,
severe catalytic converter damage and power loss will
soon occur. Immediate service is required.
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.