What is the meaning of OBD-II code P0463, and what are the possible causes and solutions for this code to be generated?

The PCM calculates the amount of fuel in the tank using signals with low voltage. Typically, the maximum voltage reading is 5 volts, and if the voltage reading falls outside the normal range established by the manufacturer, a P0463 code will occur. There are several possible causes for a P0463 code, such as: -An issue with the fuel level sensor circuit -A malfunctioning fuel level sensor -Damage to the fuel level sensor float located in the gas tank -Damage or corrosion in the gas tank -A rare problem with the powertrain control module (PCM) To diagnose a P0463 code, a mechanic will use an OBD-II scanner, clear the code, and take a test drive while monitoring the fuel gauge. They will then systematically work through the probable causes, clearing the code and retesting after each repair until the problem is resolved. The solution for P0463 depends on the root cause, but options include repairing or replacing the fuel tank, fuel level sensor float, fuel level sensor, wiring harness, or tightening a loose connection in the fuel level sensor circuit. While you may track fuel based on mileage, it's crucial to resolve any fuel sensor error code quickly, especially if you need to pass an OBD-II emissions test on renewing vehicle registration. The Check Engine Light will stay on if the fuel level sensor is inaccurate, making it impossible to pass an emissions test. However, the problem can be fixed easily and inexpensively.