P0442 Evaporative Emission Control System Leak Detected (Small Leak)

Powertrain Severity: Low Generic OBD-II

A small leak was found in the EVAP system.

Common causes

  • Fuel cap seal worn
  • Small crack in an EVAP hose
  • Leaking purge or vent valve

Symptoms

  • Check engine light
  • Faint fuel smell

What to check

  1. Replace a worn fuel cap
  2. Smoke-test the system
  3. Inspect hoses near the tank

Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0442, follow the service information for that make and model.

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