2009 Dodge Ram 1500 - Gas light

have a dodge ram 150 engine light @gas light on

Give more info…is the light ON when tank is filled?

Do you mean both the check engine light and the low fuel light are lit?

Your truck has an evaporative emissions system vapor leak.

Logic in the PCM will illuminate the gas cap warning light if a leak is detected during the ignition cycle just after filling the fuel tank.

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