P0463 2016 Honda CR-V Code - Fuel Level Sensor Circuit High Voltage

P0463 indicates a "Fuel Level Sensor Circuit High Voltage," meaning the fuel level sensor is sending a voltage signal to the engine control module (ECM) that is outside the expected range.

Symptoms may include an inaccurate fuel gauge reading, a check engine light, erratic fuel level indicators, or difficulty determining when to refuel.

Common causes include a faulty fuel level sensor, damaged wiring or connectors in the fuel sensor circuit, corrosion at the electrical connections, or a malfunctioning ECM.

While the vehicle may still be drivable, the fuel gauge might not work correctly, increasing the risk of running out of fuel unexpectedly.

Start by inspecting the wiring and connectors to the fuel level sensor for damage or corrosion. You can also use a multimeter to measure the sensor's voltage output and compare it to manufacturer specifications.

Repairs may involve replacing the fuel level sensor, repairing damaged wiring or connectors, cleaning corroded terminals, or, in rare cases, reprogramming or replacing the ECM.

The repair cost varies but typically ranges from $150 to $400, depending on whether the issue is with the sensor, wiring, or other components.

While unlikely, a faulty fuel pump assembly (which includes the fuel level sensor) could cause this code if the sensor is integrated into the pump unit.

Clearing the code without addressing the root cause will only temporarily remove the check engine light. The issue will likely reoccur until repaired.

While not extremely common, issues with the fuel level sensor or its circuit can occur, especially in older vehicles or those exposed to moisture or corrosion.