P0463 – Fuel Level Sensor Circuit High Input

Description

The fuel level sensor is reporting a high signal.

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Symptoms

  • Incorrect fuel gauge
  • Hard starting
  • Poor fuel economy
  • Check engine light
  • Stalling

Causes

  • Faulty fuel level sensor
  • Damaged wiring
  • Fuel pump issue
  • Connector problem
  • ECU issue

Diagnosis

  • Inspect wiring
  • Test fuel level sensor
  • Check connectors
  • Scan live data
  • Inspect fuel pump

Repair

  • Replace fuel level sensor
  • Repair wiring
  • Fix connectors
  • Replace fuel pump
  • Update ECU

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