AutoCodes – Subaru – P1423 Subaru

P1423 Subaru Code - EVAP Vent Control High Input

Quick Answer

P1423 Subaru indicates EVAP Vent Control High Input. Common causes include Faulty EVAP Vent Solenoid, EVAP Vent Solenoid harness is open or shorted, EVAP Vent Solenoid circuit poor electrical connection. 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: P1423 Subaru indicates EVAP Vent Control High Input.
Common causes: Common causes include Faulty EVAP Vent Solenoid, EVAP Vent Solenoid harness is open or shorted, EVAP Vent Solenoid circuit poor electrical connection.
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.

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Code Popularity 5,267

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1423 Subaru Description

OBDII Code P1423 Subaru - EVAP Vent Control High Input - AutoCodes.com — P1423 Subaru Code - EVAP Vent Control High Input

What does this mean?

What are the Possible Causes of the DTC P1423 Subaru?

Faulty EVAP Vent Solenoid
EVAP Vent Solenoid harness is open or shorted
EVAP Vent Solenoid circuit poor electrical connection

How to Fix the DTC P1423 Subaru?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1423 Subaru code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1423 Subaru code?

Need more information on how to fix the P1423 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1423 Subaru Code

1. What are the common symptoms of OBDII code P1423 in a Subaru related to EVAP Vent Control High Input?

- Common symptoms include the Check Engine Light illuminating, decreased fuel efficiency, and potential fuel odor.

2. What are the possible causes of OBDII code P1423 in a Subaru indicating EVAP Vent Control High Input?

- Potential causes include a faulty EVAP vent control valve, a stuck-open vent valve, damaged wiring or connectors, or a problem with the vehicle's EVAP system.

3. How serious is OBDII code P1423 in a Subaru and should it be addressed immediately?

- While the vehicle may still be drivable with this code, it is recommended to address it promptly to prevent potential issues with the EVAP system and to ensure proper vehicle performance.

4. Can OBDII code P1423 in a Subaru be fixed by simply clearing the code with a scanner?

- Clearing the code may temporarily turn off the Check Engine Light, but it will not fix the underlying issue causing the code. The root cause of the code should be diagnosed and repaired.

5. Are there DIY repair tips for addressing OBDII code P1423 in a Subaru related to EVAP Vent Control High Input?

- DIY repair tips may include checking and cleaning the vent control valve, inspecting the wiring and connectors for damage, and ensuring proper EVAP system operation.

6. Should I continue driving my Subaru with OBDII code P1423 present or should I avoid driving until it's fixed?

- It is generally safe to drive the vehicle with this code present, but it is recommended to address the issue as soon as possible to prevent potential complications and ensure optimal vehicle performance.

7. How can a mechanic diagnose OBDII code P1423 in a Subaru indicating EVAP Vent Control High Input?

- A mechanic may use a scan tool to retrieve the code, inspect the EVAP system components, test the vent control valve, and check for any wiring or connector issues to diagnose the problem.

8. Will fixing OBDII code P1423 in a Subaru related to EVAP Vent Control High Input be costly?

- The cost of repairs can vary depending on the exact cause of the code. Simple fixes like cleaning the valve or replacing a damaged connector may be relatively inexpensive, while more complex issues could be costlier.

9. Can OBDII code P1423 in a Subaru recur after being repaired?

- If the root cause of the code is not properly addressed, it is possible for the code to recur. It is important to ensure that the underlying issue is fully resolved to prevent the code from coming back.

10. Is it recommended to reset the ECU after repairing OBDII code P1423 in a Subaru to clear the code and monitor for recurrence?

- Resetting the ECU after repairs can help clear the code and allow the system to reset and relearn. It is a good practice to monitor for any reoccurrence of the code after resetting the ECU.