P0463: Fuel Level Sensor Circuit High Input
10 vehicles · 7 makes · $150-$1,100 repair
Most Reported On
P0463 is an OBD-II diagnostic trouble code meaning “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. This code is most commonly reported on 2007-2014 GMC Sierra 3500HD, 2004-2012 Chevrolet Colorado, and 2003-2012 Infiniti FX35, plus 7 other vehicles, with repair costs ranging from $150 to $1,100.
Common Causes
Typical Repair Cost
Based on 10 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0463, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (10)
FAQ
What does P0463 mean?
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.
What are the most common causes of P0463?
The most common causes of P0463 are: 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). The specific cause varies by vehicle.
How much does it cost to fix P0463?
Repair costs for P0463 range from $150 to $1,100, depending on the vehicle and root cause.
Which vehicles are affected by P0463?
Au7o has documented P0463 across 10 vehicle models from 7 manufacturers: Chevrolet, GMC, Hyundai, Infiniti, Nissan, Saturn, Volvo.
Sources (12)
- NHTSANHTSA complaints for Chevrolet Colorado reporting inaccurate fuel gauge and sender failure
- ForumColoradoFans discussions on fuel sender and pump module replacement
- NHTSANHTSA complaints for Infiniti FX35 inaccurate fuel gauge readings
- NHTSANHTSA complaints involving inaccurate fuel gauge readings on Infiniti M35
- articleThe Fuel Gauge May Read Incorrectly: Nissan Rogue Electrical System - RepairPal
- articleP0463 on 2016-2022 Nissan Rogue: Fuel Level Sensor Circuit High Input Causes and Fixes
- ForumFuel gauge reads full when tank is half full - Nissan Rogue Sport Forum
- videoYouTube - How to Replace Fuel Pump Module on Volvo V50 (Known Channel: Scotty Kilmer)
- ForumHyundai Elantra fuel pump / fuel sender owner reports
- NHTSANHTSA complaints search - 2002 Hyundai Elantra fuel system complaints
- ForumFuel level sensor inaccurate (Saturn Ion RedLine Forums)
- articleSaturn Ion P0463: Fuel Level Sensor Circuit High Input (Drivetrain Resource)
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.