P0463 on Saturn
Fuel Level Sensor Circuit High Input
P0463 on Saturn vehicles indicates fuel level sensor circuit high input. Au7o has documented this code across 1 Saturn model — most commonly on Ion. This code means the fuel level sensor is reporting a voltage that is higher than the computer expects, which usually translates to a reading suggesting the tank is fuller than possible (such as more than full). The fuel level sensor is the float-and-sender unit inside the fuel tank that tells the gauge and computer how much fuel remains. A high-input signal points to an electrical problem like a short to voltage or an open in the sensor circuit, rather than an actual fuel issue. Besides an inaccurate or pinned fuel gauge, it can disturb EVAP system monitoring that uses fuel level data. Typical repair costs on Saturn range from $200 to $500, depending on the specific model and root cause.
Common Causes of P0463
- •Faulty fuel level sensor/sending unit (float stuck or worn)
- •Open circuit in the fuel level sensor wiring
- •Short to voltage in the sensor circuit
- •Corroded or loose connector at the tank or sending unit
- •Damaged or stuck float arm inside the tank
- •Faulty instrument cluster or gauge driver
- •Faulty PCM/ECM (rare)
P0463 on Saturn by Model
Saturn Ion(1 issue)
- Inaccurate or Erratic Fuel Gauge (Fuel Level Sensor)2003-2007
The fuel level sender inside the tank develops contaminated or worn contacts, sending erratic resistance signals to the gauge. Owners see the needle misread, drop or stick especially below a quarter tank, give false low-fuel warnings, or read empty when fuel remains. Disconnecting the battery can also throw off gauge calibration. The sender is part of the in-tank fuel pump module.
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What does P0463 mean on Saturn?▼
P0463 stands for "Fuel Level Sensor Circuit High Input." This code means the fuel level sensor is reporting a voltage that is higher than the computer expects, which usually translates to a reading suggesting the tank is fuller than possible (such as more than full). The fuel level sensor is the float-and-sender unit inside the fuel tank that tells the gauge and computer how much fuel remains. A high-input signal points to an electrical problem like a short to voltage or an open in the sensor circuit, rather than an actual fuel issue. Besides an inaccurate or pinned fuel gauge, it can disturb EVAP system monitoring that uses fuel level data. On Saturn specifically, this code is documented across 1 model.
What causes P0463 on Saturn vehicles?▼
Common causes on Saturn: Faulty fuel level sensor/sending unit (float stuck or worn), Open circuit in the fuel level sensor wiring, Short to voltage in the sensor circuit, Corroded or loose connector at the tank or sending unit, Damaged or stuck float arm inside the tank. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0463 on a Saturn?▼
Repair costs on Saturn range from $200 to $500, depending on the specific model and root cause.
Which Saturn models have P0463 documented?▼
Au7o has documented P0463 on 1 Saturn model: Ion.