Code Definition

P1464 — Fuel gauge tank sensor voltage high

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Infiniti

About P1464

P1464 is a manufacturer-specific powertrain diagnostic trouble code recorded for Infiniti vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1464 is stored, the module has detected a signal or supply voltage higher than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1464 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This code relates to the fuel gauge tank sensor, also known as the fuel level sensor, on these Nissan and Infiniti vehicles. The sensor is a float operated variable resistor in the fuel tank that reports the fuel level, and the Engine Control Module (ECM) uses this level both for the gauge and to decide when EVAP system monitors may run. DTC P1464 is set when the fuel gauge tank sensor signal voltage is too high, which usually indicates an open circuit, a high resistance connection or a sender stuck at one end of its travel. Depending on the circuit, the fuel gauge may read incorrectly and EVA...

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