Nissan Maxima fuel gauge reads full despite driving 150 miles on Nissan Maxima

Some Nissan Maxima owners report experiencing issues with their fuel gauge inaccurately reading full even after driving a significant distance, such as 150 miles. This problem may stem from a faulty gauge that is stuck on full or a malfunctioning float gauge that continuously sends a full signal. Additionally, sender unit issues, which are part of the fuel pump and responsible for measuring fuel levels, can lead to misreadings. Some owners have noted that a decrease in resistance from empty to full could indicate a short circuit between the gauge's "S" terminal and chassis ground or a problem with the sender unit itself. In certain instances, tapping on the dashboard has temporarily resolved the issue, suggesting potential connection problems with the gauge. To effectively address these concerns, it is advisable for owners to check the sender unit, inspect the fuel pump, or consult a mechanic for proper diagnosis and resolution.