OBD-II diagnostic trouble code
P0452Safe to drive

Evaporative Emission System Pressure Sensor Low Input

The EVAP system's pressure sensor reading is implausibly low, usually from a wiring fault rather than an actual pressure condition.

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Code names are compiled from open/standardized SAE and ISO references. Explanations, symptoms, causes and fixes are original. Covers generic (P0/C0/B0/U0) codes only — manufacturer-specific codes are planned for a future update.

Frequently asked questions

Can I drive with P0452?

In most cases, yes — P0452 is generally not an urgent safety issue and the car is usually safe to drive for a while. Still, get it checked soon, since the underlying cause can affect fuel economy or emissions the longer it's left.

How much does it cost to fix P0452?

The cost varies too much by cause and vehicle to give a single figure here — a diagnosis will narrow it down.

What causes P0452?

AS
Reviewed by Artyom SemenovAutomotive Editor · Fact-checked by Yauheni Kapliarchuk, Editor-in-Chief
Code names compiled from open SAE/ISO references; explanations and repair guidance are original editorial content
Last verified: 09 Jul 2026 · Our methodology