P0463 on a Subaru: Causes, Fixes & Repair Cost

🟢 Low severity · drivable

Safe to drive, but the fuel gauge may be wrong — track your miles or fill up often so you don't run out of gas.

What P0463 means on a Subaru

On a Subaru, P0463 means the fuel level sender is sending voltage that's too high, so the computer reads a full tank. The sender is built into the fuel pump module on most Subarus, and its resistor strip wears with age. The engine runs fine; the gauge is what reads wrong.

Is P0463 common on Subarus?

P0463 appears on higher-mileage Subarus like the Outback, Forester, and Impreza, where sender wear is a well-known cause of fuel gauge problems. Replacing the sender means accessing the pump module in the tank, usually through the rear seat area. It's a gauge issue, not a drivability issue.

Commonly reported on: Outback, Forester, Impreza.

Symptoms

Check engine light on
Fuel gauge stuck on full
Fuel gauge reads wrong or drops suddenly
No change in how the car drives

Common causes

most common: Worn fuel level sender in the fuel pump module
common: Corroded connector at the fuel pump module
common: Short or damaged wiring in the fuel level circuit
less common: Faulty instrument cluster reading

How to fix it

Fix	DIY?	Typical cost
Check the fuel level sensor wiring and connector	Yes	$0–40
Replace the fuel pump module with sender	Mechanic	$250–550
Repair a short or broken wire in the sensor circuit	Mechanic	$80–200

Frequently asked questions

Can I drive my Subaru with a P0463 code?

Yes. The engine runs normally; only the fuel gauge reading is in doubt. Track your miles or fill up often so you don't run out of gas.

What usually causes P0463 on a Subaru?

A worn fuel level sender, which is part of the fuel pump module on most Subarus. Sender wear is a well-known cause of fuel gauge problems on these models.

How much does it cost to fix P0463 on a Subaru?

Replacing the fuel pump module with the sender usually runs $250–550 with labor, depending on the model. Wiring repairs are typically $80–200.