2005 Nissan Xterra P0463 Fault: Fuel Level Sensor Circuit High Input - Is the Fuel Pump and Sensor Combined?
I own a 2005 Nissan Xterra. The check engine light came on, indicating a 'Check Engine Soon' condition. I visited Auto Zone, where they diagnosed Error Code P0463: Fuel Level Sensor Circuit High Input (includes hybrid models). My question is: Does the fuel pump and fuel level sensor come as one integrated unit in this vehicle? I was told that both components are housed together in a single assembly — not separate parts. Is this accurate? Additionally, what would be the approximate cost to repair this issue? Best regards, Phyllis Sparger
It's recommended to perform a professional diagnosis first. If the fuel level sensor is faulty, it may need replacement — either just the sensor or the entire pump and sensor assembly. Estimated costs: - Diagnosis: ~$100 - Simple circuit repair (wiring/grounding): ~$100 - Full pump and sensor replacement (parts + labor): ~$500 Check online estimates at sites like yourmechanic.com for accurate pricing in your area. A simple test to verify the fuel level circuit: Connect a solid ground to the fuel level sensor connector at the fuel tank. With the ignition ON, the fuel gauge should move to one extreme (full or empty). If you remove the ground connection, the gauge should shift to the opposite end. A responsive gauge indicates that the wiring and instrument cluster are functioning properly — pointing toward a faulty fuel level sensor as the likely cause. Note: The fuel tank may need removal to access the pump module inside. While a PCM or BCM (Body Control Module) failure is theoretically possible, it's highly unlikely and should not be assumed without proper diagnostics. For more details on P046-3, see: https://www.yourmechanic.com/p0463