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P2668 Severity
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
Some vehicles are designed to run on more than one type of fuel, such as a car that runs on Compressed Natural Gas and Gasoline. The Fuel Gauge Select Switch allows the driver to select which fuel system to run the engine from. The lamp on the switch indicates which fuel system is being used. If the light fails to operate as requested, code P2668 will be stored.
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OBD-II Code Fuel indicator light will not operate is defined as a Fuel Mode Indicator Lamp Control Circuit
Some vehicles are designed to run on more than one type of fuel, such as a car that runs on Compressed Natural Gas and Gasoline. The Fuel Gauge Select Switch allows the driver to select which fuel system to run the engine from. The lamp on the switch indicates which fuel system is being used. If the light fails to operate as requested, code P2668 will be stored.