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P0024 Subaru Code - Exhaust AVCS System 2 Range/Performance

Quick Answer

The P0024 code for Subaru vehicles refers to a fault in the Exhaust AVCS (Active Valve Control System) System 2, indicating a range/performance issue. Common causes include Faulty AVCS solenoid: The solenoid responsible for controlling the AVCS system may be malfunctioning, causing the timing issues, Clogged oil passages: Dirt or debris in the oil passages can restrict the flow of oil to the AVCS system, leading to timing problems, Timing chain issues: A stretched or damaged timing chain can affect the timing of the camshaft, triggering the P0024 code. 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
P0024 Subaru indicates Exhaust AVCS System 2 Range/Performance.
Common causes
Common causes include Faulty AVCS solenoid: The solenoid responsible for controlling the AVCS system may be malfunctioning, causing the timing issues, Clogged oil passages: Dirt or debris in the oil passages can restrict the flow of oil to the AVCS system, leading to timing problems, Timing chain issues: A stretched or damaged timing chain can affect the timing of the camshaft, triggering the P0024 code.
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 07, 2024
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Code P0024 Subaru Description

The P0024 code for Subaru vehicles refers to a fault in the Exhaust AVCS (Active Valve Control System) System 2, indicating a range/performance issue. The AVCS is a system that controls the timing of the intake and exhaust valves in the engine, optimizing performance and fuel efficiency. When this system malfunctions, it can lead to various issues affecting the engine's performance.

OBDII Code P0024 Subaru - Exhaust AVCS System 2 Range/Performance
P0024 Subaru Code - Exhaust AVCS System 2 Range/Performance

Common Causes of P0024 Subaru

  1. Faulty AVCS solenoid: The solenoid responsible for controlling the AVCS system may be malfunctioning, causing the timing issues.
  2. Clogged oil passages: Dirt or debris in the oil passages can restrict the flow of oil to the AVCS system, leading to timing problems.
  3. Timing chain issues: A stretched or damaged timing chain can affect the timing of the camshaft, triggering the P0024 code.
  4. Low engine oil level: Insufficient oil in the engine can prevent the AVCS system from operating correctly, resulting in timing errors.

Symptoms of P0024 Subaru

  1. Rough idling: The engine may idle roughly or inconsistently due to the timing issues caused by the malfunctioning AVCS system.
  2. Reduced engine performance: The vehicle may experience a loss of power or acceleration due to the incorrect timing of the exhaust camshaft.
  3. Increased fuel consumption: A malfunctioning AVCS system can lead to poor fuel efficiency, causing the vehicle to consume more fuel than usual.
  4. Check engine light: The P0024 code will trigger the check engine light on the dashboard, indicating a problem that needs attention.

How to Fix P0024 Subaru

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the AVCS system components.
  2. Check oil levels and quality: Ensure the engine oil is at the correct level and free of contaminants that could affect the AVCS system's operation.
  3. Replace AVCS solenoid: If the solenoid is found to be faulty, replace it with a new one to restore proper operation of the AVCS system.
  4. Clean oil passages: Remove any debris or sludge from the oil passages to ensure proper oil flow to the AVCS system.
  5. Inspect timing chain: Check the timing chain for wear or damage and replace it if necessary to correct the timing issues.

Cost to Fix P0024 Subaru

The cost of repairing the P0024 code on a Subaru vehicle can vary depending on the specific cause of the issue and the labor rates at the repair shop. On average, the parts required for this repair, such as the AVCS solenoid, can cost between $100 and $200. Additionally, the labor costs for diagnosing and fixing the problem can range from $200 to $500, bringing the total repair cost to approximately $300 to $700.

What does this mean?

Tech Notes for P0024 Subaru

There is a Factory Service Bulletin for the following Subaru models:
2012–2013 Subaru Impreza
2012–2013 Subaru XV Crosstrek
2013 Subaru Legacy
2013 Subaru Outback
2011–2013 Subaru Forester
Subaru Factory Service Bulletin OBDII Code P0024

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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 P0024 Subaru Code

1. What does the OBDII code P0024 mean on a Subaru?

P0024 indicates an issue with the Exhaust AVCS (Active Valve Control System) on Bank 2, where the camshaft timing is outside the expected range or performance parameters.

2. What are the common symptoms of the P0024 code on a Subaru?

Symptoms include rough idling, reduced engine performance, poor fuel efficiency, hesitation during acceleration, and potentially an illuminated Check Engine Light.

3. What causes the P0024 code on a Subaru?

Common causes include a faulty oil control valve (OCV), dirty or degraded engine oil, a malfunctioning camshaft position sensor, timing chain issues, or wiring problems in the AVCS system.

4. Can a clogged oil passage cause the P0024 code?

Yes, clogged or restricted oil passages can prevent proper oil flow to the AVCS system, leading to timing issues and triggering the P0024 code.

5. Is it safe to drive with the P0024 code active?

Driving with the P0024 code is not recommended, as it can lead to further engine damage, poor performance, and increased fuel consumption.

6. How can I fix the P0024 code on my Subaru?

Common fixes include replacing the oil control valve, cleaning or replacing the camshaft position sensor, changing the engine oil and filter, or addressing timing chain issues.

7. Can low oil levels trigger the P0024 code?

Yes, low or dirty oil can impact the AVCS system's performance, potentially causing the P0024 code to appear.

8. How much does it cost to repair the P0024 code on a Subaru?

Repair costs vary but typically range from $150 to $500, depending on whether the issue is related to the oil control valve, sensor replacement, or more extensive timing system repairs.

9. What tools are needed to diagnose the P0024 code?

You’ll need an OBDII scanner, a multimeter for electrical testing, and possibly a mechanical toolset if physical repairs are required.

10. Can a software update fix the P0024 code on a Subaru?

In some cases, a reprogramming or software update for the engine control module (ECM) might resolve the issue if it’s related to incorrect AVCS calibration.

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