Engine-Codes - Subaru - P1443 Subaru

P1443 Subaru Code - Evaporative Emission Control System Vent Control Function Problem

- Code Popularity: 41,365 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1443 Subaru?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty/Clogged Drain Valve
  • Drain Valve harness is open or shorted
  • Drain Valve circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

Code Tech Notes

The drain valve can be actuated by connecting the green test mode connector under the driver side dash. The valve will continue to be actuated until the green test mode connector is disconnected. The drain valve is incorporated into the evaporative charcoal canister and cannot be replaced individually.









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How to Fix the DTC P1443 Subaru?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1443 Subaru code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1443 Subaru Code Mean?

This is a normally open solenoid used to allow fresh air to enter the charcoal canister when purging vapors into the engine. The evaporative vent solenoid (drain valve) can also be closed to allow the evaporative system to run the leak monitor. The Diagnostic Trouble Code (DTC) will set when the Engine Control Module (ECM) detects the drain valve is inoperative/stuck in the closed position.

P1443 Subaru Code - Evaporative Emission Control System Vent Control Function Problem

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