2006 Mazda 6 MazdaspeedFACTORY OEM SERVICE PROCEDURE

DTC P0463: Notes

DTC P0463 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0463 Fuel gauge sender unit circuit high Input
DETECTION CONDITION 
  • The PCM monitors the signals of the fuel level and fuel gauge sender unit output voltage from the instrument cluster. If the PCM detects that the fuel level or fuel gauge sender unit output voltage is too high, the PCM determines that the fuel gauge sender unit circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • Instrument cluster malfunction
  • Fuel gauge sender unit malfunction
  • PCM malfunction
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.