AutoCodes – Generic – P0414

P0414 Code - Secondary Air Injection System Switching Valve 'A' 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: P0414 indicates Secondary Air Injection System Switching Valve 'A' 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 34,368

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0414 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 P0414 - Secondary Air Injection System Switching Valve 'A' Circuit Shorted - AutoCodes.com — P0414 Code - Secondary Air Injection System Switching Valve 'A' Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P0414?

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

How to Fix the DTC P0414?

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 P0414 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 P0414 code?

Need more information on how to fix the P0414 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0414 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0414 Audi — Secondary Air Injection System Switching Valve 'A' Circuit Shorted
P0414 Mercedes-Benz — Secondary Air Injection System Switching Valve 'A' Circuit Shorted
P0414 Subaru — Secondary Air Injection System Switching Valve 'A' Circuit Shorted
P0414 Volkswagen — Secondary Air Injection System Switching Valve 'A' Circuit Shorted

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 P0414 Code

1. What are the common symptoms of OBDII code P0414?

- Common symptoms include the Check Engine Light (CEL) illuminating, rough idling, reduced engine performance, and increased emissions.

2. What can cause the Secondary Air Injection System Switching Valve 'A' Circuit Shorted code P0414?

- The code P0414 is typically triggered by a short circuit in the wiring or connectors associated with the secondary air injection system switching valve 'A'.

3. How serious is OBDII code P0414?

- While the code itself may not cause immediate harm to the vehicle, it can lead to increased emissions and potential long-term damage to the engine if left unresolved.

4. How do I diagnose the cause of OBDII code P0414?

- Diagnosing the issue involves inspecting the wiring and connectors associated with the secondary air injection system switching valve 'A', as well as testing the valve itself for proper functionality.

5. Can I continue driving with OBDII code P0414?

- It is generally not recommended to continue driving with a persistent P0414 code, as it can negatively impact engine performance and emissions over time.

6. How can I repair OBDII code P0414?

- Repairing the code typically involves repairing or replacing any damaged wiring or connectors, and potentially replacing the secondary air injection system switching valve 'A' if it is found to be faulty.

7. Can a DIY enthusiast fix OBDII code P0414?

- Depending on the individual's level of automotive knowledge and tools available, repairing a P0414 code may be possible for a DIY enthusiast, particularly if it involves simple wiring repairs.

8. Is it necessary to reset the OBDII code P0414 after repairs?

- Yes, it is important to reset the code after repairs are made to clear the Check Engine Light and ensure that the issue has been successfully resolved.

9. What are the possible implications of ignoring OBDII code P0414?

- Ignoring the code can lead to increased emissions output, reduced fuel efficiency, and potential damage to the engine over time, so it is advisable to address the issue promptly.

10. How much does it typically cost to fix OBDII code P0414 at a professional mechanic?

- The cost of repairing OBDII code P0414 can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor at a professional mechanic's shop.