Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P0417 OBD-II Trouble Code: Secondary Air Injection System Switching Valve B Circuit Shorted

P0417 OBD-II Trouble Code: Secondary Air Injection System Switching Valve B Circuit Shorted

check engine light

P0417 code definition

When the PCM (powertrain control module) detects an issue with the secondary air injection system, it will store the P0417 code.

What the P0417 code means

To reduce emissions, the secondary air injection system uses outside air pumped through the engine’s exhaust system to reduce toxic emissions. While some variations in the amount of air brought in by the secondary air injection system will vary, all variances are monitored by the PCM. If the variation is greater than 10% of the manufacturer’s specifications, the P0417 code will be stored and the Check Engine Light will illuminate.

What causes the P0417 code?

Possible causes of the P0417 code include:

  • A damaged or faulty air pump
  • A poor electrical connection to the air bypass solenoid circuit
  • A shorted or open connection to the air bypass harness

What are the symptoms of the P0417 code?

A few of the most common symptoms that occur when the P0417 code is stored include:

  • Unusual noises coming from the secondary air injection system
  • Engine stalling at idle or upon startup
  • Hesitation when accelerating
  • An illuminated Check Engine Light

You may actually notice some of these problems before the Check Engine light illuminates. Whether or not you see the Check Engine light come on, if you notice any of these symptoms, you should get the issue resolved immediately.

How does a mechanic diagnose the P0417 code?

With an OBD-II scanner, the mechanic can identify the P0417 code and any other related codes that may have been stored. Once they’ve identified the code, they’ll then clear it in the PCM and do a visual inspection of the secondary air injection system. They’ll look for any damage to the electrical connections and wiring in the system and correct them if they find them. Once they’ve completed this task, they’ll test-drive the vehicle to determine if the code has been resolved.

If the code hasn’t been resolved, the mechanic will likely replace the air pump and retest the vehicle. They will then test-drive the car at least one more time to ensure that the code is not an intermittent problem and that it has been completely cleared.

Common mistakes when diagnosing the P0417 code

Some mechanics will go ahead and replace the secondary air injection pump without ensuring that a water drain is in place. This can lead to more air pump failures and repeated detection of the P0417 code.

How serious is the P0417 code?

Unlike some codes, the P0417 code will generally have some noticeable symptoms along with the Check Engine light coming on. Engine hesitation may or may not be detrimental to the condition of your engine, but it can cause problems while driving. Stalling on startup or when idling can also put you in unsafe situations, depending on where and how it happens. It’s best to get the issue resolved immediately and avoid potentially dangerous driving scenarios.

What repairs can fix the P0417 code?

Depending on what’s causing the P0417 code to be stored, a few different repairs can resolve it, including:

Additional comments for consideration regarding the P0417 code

When the P0417 code is set, your vehicle may be creating a higher level of toxic emissions. Whether or not this is the case, simply having the Check Engine light illuminated will mean that you cannot pass an OBD-II emissions test. This can preclude you from legally registering and driving your car in your state, so it’s important to get this code resolved and cleared ASAP to avoid bigger problems down the road.

Need help with a P0417 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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...


Related questions

Q: P0755 & P0700 error codes

The problem with buying used tires and not having them balanced is the potential problems they can cause. Most transmissions - or more specifically, the Powertrain Control Module (PCM) which controls the transmission and drive line - contain incredibly...

Q: The check engine light is on, the car feels as if it will turn off while idling, gas smell

Hi there. A gas smell such as this is a good indication that there is a fuel leak. If it is entering the vehicle, then it is typically under the hood. Most of the time on this vehicle it comes...

Q: EPC Light is on and engine will not start

Hello, thanks for writing in about your Volkswagen Jetta. Did you check the output (volume) of the fuel pump? From what you've described, it sounds like you are not getting sufficient fuel to the fuel injectors. For an issue like...