P0449

Severity medium

AUTO

The engine control module has detected a problem with the vent valve or its control circuit in the evaporative‑emission (EVAP) system. The v

OBD-II scanner plugged into a car diagnostic port showing a trouble code
OBD-II codes: read the code, test the component, clear it and re-check.

What it means

The engine control module has detected a problem with the vent valve or its control circuit in the evaporative‑emission (EVAP) system.

How to fix P0449

  1. Visual inspection of the vent valve and wiring
  2. Check for loose or missing gas cap
  3. Scan live data for vent valve command and status

Related errors

P0446P0442P0440P0137P0300P0301P0302P0303

Source: open OBD-II DTC database

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