P0463: Evaporative Emission Control System Pressure Sensor High Input / Fuel Level Sensor Circuit High Input

What does P0463 mean?

P0463 is a diagnostic trouble code indicating "Evaporative Emission Control System Pressure Sensor High Input / Fuel Level Sensor Circuit High Input". The ECU is reading a voltage that is above the expected range. This can be caused by a short to power in the wiring, a failed sensor, or a connector issue in the fuel system.

Symptoms you may notice

• Check engine light (MIL) illuminated on dashboard
• Poor fuel economy
• Rough idle
• Hesitation during acceleration
• Fuel smell near the vehicle

Common causes

• Damaged or corroded wiring harness
• Loose or disconnected electrical connector
• Failed fuel system sensor or actuator
• Blown fuse in the related circuit
• Poor ground connection

What should you do?

This code sits in an engine peripheral, typically emissions or forced induction. It will not take braking or steering away, but it can put the car into limp mode, cost you fuel and fail a roadworthy. Book it in rather than clearing it and hoping.

Get a diagnosis for YOUR car

Code P0463 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.

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