AutoCodes – Subaru – P0417 Subaru

P0417 Subaru Code - Secondary Air Injection System Switching Valve 'B' Circuit Shorted

Quick Answer

An air pump is used on the vehicle to lower tail pipe emissions on start-up. Common causes include Faulty Air Pump inoperative, Air bypass solenoid harness is open or shorted, Air bypass solenoid circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0417 Subaru indicates Secondary Air Injection System Switching Valve 'B' Circuit Shorted.
Common causes: Common causes include Faulty Air Pump inoperative, Air bypass solenoid harness is open or shorted, Air bypass solenoid circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,243

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 18, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0417 Subaru Description

An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.

OBDII Code P0417 Subaru - Secondary Air Injection System Switching Valve 'B' Circuit Shorted - AutoCodes.com — P0417 Subaru Code - Secondary Air Injection System Switching Valve 'B' Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P0417 Subaru?

Faulty Air Pump inoperative
Air bypass solenoid harness is open or shorted
Air bypass solenoid circuit poor electrical connection

How to Fix the DTC P0417 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 P0417 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.

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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 P0417 Subaru Code

1. What are the common symptoms of OBDII code P0417 in a Subaru related to the Secondary Air Injection System Switching Valve 'B' Circuit Shorted?

- Common symptoms include rough idling, reduced engine performance, and illuminated check engine light.

2. What can cause the OBDII code P0417 to trigger in a Subaru?

- The code P0417 is typically triggered by a short circuit in the Secondary Air Injection System Switching Valve 'B' circuit.

3. How serious is the OBDII code P0417 in a Subaru?

- While the code itself may not cause immediate harm to the vehicle, it can affect engine performance and emissions, and should be addressed promptly.

4. How can I diagnose the OBDII code P0417 in my Subaru?

- A professional diagnosis using an OBDII scanner is recommended to confirm the specific issue with the Secondary Air Injection System Switching Valve 'B' circuit.

5. Can I continue driving my Subaru with the OBDII code P0417 present?

- It is not advisable to continue driving with the code present, as it can lead to further issues with engine performance and emissions.

6. Is it possible to repair the OBDII code P0417 in a Subaru myself?

- While some DIY enthusiasts may attempt to address the issue, it is recommended to seek professional help to properly diagnose and repair the problem.

7. What are the potential repair options for fixing the OBDII code P0417 in a Subaru?

- Repair options may include replacing the Secondary Air Injection System Switching Valve 'B', checking and repairing wiring issues, or resetting the fault code after addressing the root cause.

8. How much does it typically cost to repair the OBDII code P0417 in a Subaru?

- The cost of repair can vary depending on the specific issue, the labor rates of the repair shop, and the cost of any replacement parts needed.

9. Are there any preventive measures to avoid the OBDII code P0417 in a Subaru?

- Regular maintenance and inspections of the Secondary Air Injection System can help prevent issues that may trigger the code P0417.

10. How long does it take to repair the OBDII code P0417 in a Subaru?

- The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a day for a professional technician to diagnose and fix the problem.