P0463 on a Lexus: 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 Lexus

On a Lexus, P0463 means the fuel level sender is sending voltage that's too high, so the computer reads a full tank. Like other Toyota-family vehicles, the sender is part of the fuel pump module and its resistor strip wears with age. The engine runs fine; the gauge is what reads wrong.

Is P0463 common on Lexuss?

P0463 appears on higher-mileage Lexus models like the RX, ES, and NX. Sender wear is the usual cause, and replacing it means accessing the fuel pump module in the tank. It's a gauge issue rather than a drivability issue.

Commonly reported on: RX, ES, NX.

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