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P1440low severityPowertrain

EVAP Control System Small Leak

on 1998 Nissan 200SX 2.0L I4 SR20DE · FWD

What this code means

Small leak detected during EVAP system pressure test.

Symptoms

  • CEL
  • Fuel odor possible
  • Failed emissions

Common causes

  • Loose fuel cap
  • Faulty purge valve
  • Cracked canister
  • Damaged EVAP hoses

Diagnostic steps

  1. Check fuel cap
  2. Smoke test EVAP system
  3. Test purge valve
  4. Inspect hoses

Repair notes

Tighten fuel cap or repair EVAP leak.

Other Powertrain codes on this vehicle

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