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2010 SUBARU TRIBECA
3.6L H6•AWD•AUTOMATIC•gas
10 active safety recalls on this vehicle — view recalls
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Repairs0Labor478Torque3345Fluid9DTC1548Battery1Maintenance0Recalls10
P1443low severityPowertrain

EVAP Vent Control Function Problem

on 2010 Subaru Tribeca 3.6L H6 · AWD

What this code means

The PCM has detected a functional problem with the EVAP canister vent control. The vent valve is not performing its intended function during the EVAP system leak check, preventing the system from sealing for the pressure test.

Symptoms

  • Check Engine Light
  • Failed emissions test
  • EVAP monitor will not complete
  • Possible fuel odor

Common causes

  • Faulty canister vent control valve (stuck open)
  • Vent valve wiring issue
  • Blocked or damaged vent line
  • Charcoal canister blockage
  • Vent filter clogged with debris

Diagnostic steps

  1. Command vent valve closed with scan tool and check if system holds vacuum
  2. Test vent valve solenoid resistance
  3. Inspect vent line for blockage
  4. Check vent filter for debris
  5. Smoke test EVAP system

Repair notes

Replace the canister vent valve if it does not seal when commanded closed.

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