DTC P0463: Fuel Level Sensor (Gauge) Circuit High Input

Observe fuel gauge. Ensure gauge reads greater than empty. Add fuel if necessary. Go to next step.
Turn ignition on. Measure voltage (backprobe) between ground and PCM harness connector "C", terminal No. 11 (Pink/Blue wire). If reading is 7 volts or greater, go to next step. If reading is less than 7 volts, problem is intermittent or due to a faulty PCM. See TESTS W/O CODES article.

Turn ignition off. Disconnect fuel level sensor harness connector located under right rear door opening trim. Using an ohmmeter, check for specified resistance between ground and Pink/Blue wire at fuel level sensor connector (fuel level sensor side). See FUEL LEVEL SENSOR RESISTANCE table. If resistance is as specified, check for an open in Pink/Blue wire between fuel level sensor and PCM, or an open in Black wire between fuel level sensor and ground. Repair as necessary. If resistance is not as specified, go to next step.

FUEL LEVEL SENSOR RESISTANCE

Fuel Level	Resistance (Ohms)
Empty	120
Half	32.5
Full	10 Or Less

Check for an open in Pink/Blue wire or Black wire between connector and fuel level sensor. Repair as necessary. If wires are okay, replace fuel level sensor. Retest system.