P0413 OBD-II Trouble Code: Secondary Air Injection System Switching Valve A Circuit Open

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Cost of diagnosing the P0413 code

P0413 is a diagnostic trouble code (DTC) for "Secondary Air Injection System Switching Valve A Circuit Open". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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P0413 trouble code definition

A P0413 trouble code is related to a vehicle’s air injection system designed to reduce emissions by injecting fresh air directly into the exhaust system. This allows for a fuller combustion of exhaust gases and is not found on every modern, OBD-II vehicle.

What the P0413 code means

P0413 is an OBD-II generic code for a voltage problem with the air injection system. Most systems send voltage readings to the engine control module and if those readings are out of the manufacturer’s parameters, the system will be deemed defective and a Check Engine Light will be illuminated.

What causes the P0413 code?

Because an air injection system can be affected by ambient temperatures, the system itself isn’t always the cause. If the one-way check valve breaks or gets worn out, it can allow condensation to build up inside the injection pump that will freeze in cold weather. Other likely causes can be:

  • A faulty air injection pump.
  • Faulty wiring to and from the pump.
  • Faulty air bypass solenoid harness

What are the symptoms of the P0413 code?

If you have a P0413, chances are high you’ll hear an audible noise from the pump itself. Poor performance under acceleration will also be a symptom. Because most pumps operate during startup and idling, the engine may stall with a P0413 or have trouble starting.

How does a mechanic diagnose the P0413 code?

Firstly, your mechanic will visually inspect all the associated wiring for the air injection system and repair as necessary. After clearing the code, a test drive will reveal if the P0413 returns immediately. If it doesn’t, the issue could be intermittent or temperature dependent. If it does return, a fuse may be blown and your mechanic will check that next. If the fuse is fine, chances are high the pump itself is defective and will need to be replaced.

Common mistakes when diagnosing the P0413 code

Some drivers will fail to inspect and repair the one-way check valves inserted in the hoses leading to the exhaust pipe. If the pump is replaced with a still defective valve, chances are high the pump will fail shortly after.

How serious is the P0413 code?

While most emissions control codes are not very severe, a P0413 will often cause adverse driving conditions. Some vehicles may have difficulty driving to a repair shop, requiring the assistance of mobile mechanics to fix the problem where the vehicle is parked.

What repairs can fix the P0413 code?

The most common repairs for a P0413 are as follows:

  • Replacing damaged wiring to the air injection system.
  • Replacing a faulty air injection pump.
  • Inspecting and repairing one-way check valves.

Additional comments for consideration regarding the P0413 code

If you have a P0413 code, chances are high you’re driving a Volkswagen. Other European manufacturers frequently use these air injection systems to control emissions. If you have one, look into fabricating a water drain system to ensure the check valves do not freeze during the winter.

Need help with a P0413 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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Jonathan

32 years of experience
216 reviews
Jonathan
32 years of experience
Great experience! Jonathan was able to quickly replace my broken drivers-side door handle. Plus he ran a complete engine diagnostic and determined my Evaporation System sensors need replacing. I asked him if this was the reason why every now and then I would briefly smell gasoline while driving my car. He stated this was caused by the sensors not opening and closing properly. He provided me with a comprehensive quote for parts plus labor and we scheduled our next appointment in three weeks. I plan on having all of my car repairs done by My Mechanic - Jonathan.
2006 KIA SPORTAGE - CHECK ENGINE LIGHT IS ON - CLEARWATER, FLORIDA

Robert

30 years of experience
75 reviews
Robert
30 years of experience
Straight to the point
2006 CHEVROLET EQUINOX - CHECK ENGINE LIGHT IS ON - ATLANTA, GEORGIA

Oscar

21 years of experience
66 reviews
Oscar
21 years of experience
Oscar was extremely knowledgeable, friendly and helpful. He was willing to answer all the questions I had for him and took his time to explain things to me. This is an extremely useful service and Oscar was a particularly helpful mechanic. He had my issue sorted out in no time and gave helpful suggestions for next steps.
2004 ACURA TSX - CHECK ENGINE LIGHT IS ON - HALETHORPE, MARYLAND

Jason

21 years of experience
57 reviews
Jason
21 years of experience
Jason arrived on time and diagnosed my 2 problems and gave me some really valuable information as to how to approach solving these issues. I have a little time before I have to make one of the repairs and the other issue might not have to be repaired at all. Being able to talk this over with a qualified mechanic was worth the labor price. If I have to replace the water pump I will call Your Mechanic for sure.
2011 FORD F-150 - CHECK ENGINE LIGHT IS ON - OKLAHOMA CITY, OKLAHOMA

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