Subaru P1443: EVAP Vent Control Solenoid — Fix
On Subaru vehicles, P1443 means a malfunction in the evaporative emissions (EVAP) vent control solenoid valve — the valve that seals the charcoal canister so the system can run leak tests.
- Applies to
- Subaru vehicles
- Est. repair cost
- $30 – $300
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include a failed vent control solenoid, a loose/corroded connector, or damaged wiring near the canister. P1xxx codes are manufacturer-specific — P1443 is defined by Subaru (not part of the generic SAE J2012 set), so this applies to Subaru vehicles. Clear it with a scan tool after any repair.
Symptoms
- Check engine light on
- No drivability effect
- EVAP monitor will not complete / fails emissions
How to fix it
- 1
Inspect the vent solenoid and wiring
1. Locate the EVAP vent control solenoid at the charcoal canister. 2. Check the connector and wiring for corrosion or damage.
- 2
Test and replace
1. Check the solenoid operation/resistance. 2. Replace if faulty, then clear the code.
Frequently asked questions
Is P1443 serious on my Subaru?
No — it is an emissions valve, so the car drives normally, but it will fail an emissions inspection until the vent solenoid is repaired.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.