P0463 on RAM: How to Diagnose & Fix
Fuel Level Sensor Circuit High Input
1 RAM model · 1 documented issue · $150-$500 repair
P0463 on RAM by model: symptoms, diagnosis and fix
The in-tank fuel level sending unit (float arm and variable-resistor card, part of the fuel pump module) wears out and gives false readings — commonly reading full then dropping to empty, sticking, or bouncing. On OBD-II trucks it sets P0463/P0462. It is one of the most-searched Ram gauge complaints and is separate from the instrument-cluster fault.
Common Symptoms
- Gauge reads full then suddenly drops to empty
- Gauge stuck on empty or full
- Erratic/bouncing needle
- Low-fuel light behaves incorrectly
How to Fix
Confirm the sender resistance sweep before replacing the cluster. Repair requires dropping the tank (or removing the bed) and replacing the fuel level sending unit — often done as a complete fuel pump/sender module for reliability. Avoid the cheapest unbranded senders, which frequently read wrong out of the box; use a quality module (Delphi/Spectra/Mopar). Parts $60-$250, with labor $150-$500.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Carter P74673M fuel pump and level-sender module
1994 Dodge Ram 1500 gasoline 3.9L, 5.2L or 5.9L with Carter-style module as listed; do not extend to later connector designs without exact match.
- Detroit Axle FP74735M fuel pump module assembly
1998-2000 Dodge Ram 1500 with 26- or 34-gallon tank as listed; confirm engine, connector and OE cross-reference. Other 1998-2001 tank/engine combinations use different modules.
- Carter P75028M fuel pump module assembly
2002-2003 Dodge Ram 1500 applications represented by Carter P75028M; verify 26-gallon tank, engine and OE number.
- Carter P76259M fuel pump module assembly
2004-2006 Dodge Ram 1500 gasoline 3.7L, 4.7L or 5.7L with 26-gallon tank and matching engine VIN/connector; not 34/35-gallon tanks.
- Agility 4011439 / Carter P76846M fuel module assembly
2007 Dodge Ram 1500 applications cross-referenced to Carter P76846M and Mopar 68004489AA; use the retailer engine selector and confirm tank capacity/OE label.
- Genuine Mopar 68027917AE fuel pump and level-sender module
Selected 2008 Dodge Ram 1500 SLT/ST regular- and quad-cab 3.7L, 4.7L and 5.7L applications shown; confirm cab/bed, tank and VIN because several other 2008 modules exist.
- Delphi FG0889 fuel pump module assembly
Confirm VIN, fuel type and OE label; not flex-fuel module 68050948AB.
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Sources for this issue (2)
P0463 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0463 mean on a RAM?
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 RAM it is documented across 1 model: 1500.
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 on a RAM?
Published repair estimates on RAM range from $150 to $500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0463 on a different make?
View P0463 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.