P0462: Evaporative Emission Control System Pressure Sensor Low Input / Fuel Level Sensor Circuit Low Input

What does P0462 mean?

P0462 is a diagnostic trouble code indicating "Evaporative Emission Control System Pressure Sensor Low Input / Fuel Level Sensor Circuit Low Input". The ECU is detecting a voltage reading that is below the expected range in the fuel system circuit. This typically points to a wiring short, a faulty sensor, or a grounding issue.

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.