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P1422 Subaru Code - EVAP Purge Control Valve Circuit High Input

Quick Answer

The P1422 Subaru code indicates a problem with the EVAP (Evaporative Emission Control) system's Purge Control Valve Circuit. Common causes include Faulty Purge Control Valve, Wiring issues such as a short or open circuit, Defective ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1422 Subaru indicates EVAP Purge Control Valve Circuit High Input.
Common causes
Common causes include Faulty Purge Control Valve, Wiring issues such as a short or open circuit, Defective ECM.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1422 Subaru Description

The P1422 Subaru code indicates a problem with the EVAP (Evaporative Emission Control) system's Purge Control Valve Circuit. The EVAP system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The Purge Control Valve regulates the flow of fuel vapors from the charcoal canister to the engine intake for combustion.

OBDII Code P1422 Subaru - EVAP Purge Control Valve Circuit High Input
P1422 Subaru Code - EVAP Purge Control Valve Circuit High Input

Common Causes of P1422 Subaru

  1. Faulty Purge Control Valve
  2. Wiring issues such as a short or open circuit
  3. Defective ECM
  4. Vacuum leaks in the EVAP system
  5. Clogged charcoal canister

Symptoms of P1422 Subaru

  1. Check Engine Light is illuminated
  2. Poor fuel economy
  3. Rough idle or stalling
  4. Strong fuel odor
  5. Difficulty starting the vehicle

How to Fix P1422 Subaru

  1. Diagnose the issue using a scan tool to verify the P1422 code and check the Purge Control Valve's operation.
  2. Inspect the wiring harness for any damage or corrosion, and repair or replace as needed.
  3. Test the Purge Control Valve for proper operation and replace if faulty.
  4. Check the charcoal canister and EVAP system for any leaks or blockages, and address any issues found.
  5. Clear the code and test drive the vehicle to ensure the problem has been resolved.

Cost to Fix P1422 Subaru

The cost of repairing a P1422 Subaru code can vary depending on the cause of the issue and the labor rates at the repair shop. On average, the cost of parts for this repair can range from $100 to $300, with labor costs adding an additional $100 to $200. Overall, the total repair cost could range from $200 to $500. It's important to note that these are rough estimates, and actual costs may differ based on the specific circumstances of the repair. It's recommended to consult with a qualified mechanic for a more accurate cost estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1422 Subaru Code

1. What does the OBDII code P1422 mean on a Subaru?

P1422 indicates a high input issue in the EVAP Purge Control Valve Circuit, which is part of the vehicle's evaporative emissions control system.

2. What are the common symptoms of the P1422 code in a Subaru?

Symptoms may include the check engine light turning on, poor fuel efficiency, rough idling, difficulty starting the engine, or a noticeable fuel smell.

3. What causes the P1422 code on a Subaru?

Common causes include a faulty EVAP purge control valve, damaged wiring or connectors in the circuit, a malfunctioning ECM, or a blockage in the EVAP system.

4. Can I drive my Subaru with the P1422 code?

While you may still be able to drive, it is not recommended as it can lead to increased emissions, potential engine performance issues, and difficulty passing emissions tests.

5. How do I diagnose the P1422 code in my Subaru?

Begin by using an OBDII scanner to confirm the code, then inspect the EVAP purge control valve, wiring, and connectors for damage or corrosion. Perform a continuity test on the circuit if needed.

6. How do I fix the P1422 code on a Subaru?

Repairs may include replacing the EVAP purge control valve, repairing damaged wiring or connectors, clearing blockages in the EVAP system, or in rare cases, reprogramming or replacing the ECM.

7. What tools are needed to fix the P1422 code?

You may need an OBDII scanner, a multimeter for electrical testing, basic hand tools, and potentially a vacuum pump to test the EVAP system.

8. How much does it cost to repair the P1422 code?

Costs can vary but typically range from $150 to $400, depending on whether you need to replace the purge valve, repair wiring, or perform other fixes.

9. Can a loose gas cap cause the P1422 code on a Subaru?

A loose gas cap is unlikely to trigger P1422, as this code specifically relates to the purge control valve circuit, not the overall EVAP system pressure integrity.

10. How can I prevent the P1422 code from reoccurring?

Regular maintenance of the EVAP system, inspecting wiring for wear, and promptly addressing any check engine light issues can help prevent this code from reappearing.

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