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On-board diagnostic (OBD) codes help mechanics and vehicle owners identify possible issues in a vehicle. But before you can resolve these problems, it’s important to know what these codes mean.

Code P3497 is one of many trouble codes that can be logged and retrieved from the OBD system. Here is some helpful information that can help you understand what getting this code can mean for your vehicle.

What Does the P3497 Code Mean?

4 cylinder engine closer look
P3497 code is logged when the powertrain control module (PCM) detects that there is a problem in engine bank 2 of the cylinder deactivation system.

Diagnostic trouble code (DTC) P3497 stands for “Cylinder Deactivation System Bank 2.” This code is logged when the powertrain control module (PCM) detects that there is a problem in engine bank 2 of the cylinder deactivation system.

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Cylinder deactivation, also known as variable displacement, systems are designed for fuel conservation. They are typically found in vehicles equipped with an engine that has six or more cylinders.

Under specific driving conditions, all of the engine’s horsepower might not be needed. These driving conditions typically involve low throttle and highway speeds. The cylinder deactivation system disables corresponding cylinders to conserve fuel when these circumstances arise.

The PCM will log code P3497 when it detects erratic activity in the cylinder deactivation system or if it can’t make the cylinder deactivation system for engine bank 2.

two mechanics perform an obd check on a car
Depending on the severity of the problem, related error codes can also be stored along with DTC P3497.

Depending on the severity of the problem, related error codes might also be stored with this DTC. Code P3497 is similar to error code P3400.

Note: The definition of code P3497 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P3497 Code?

  • Low engine oil level or pressure
  • Dirty engine oil
  • Circuit problems, such as damaged wires or poor connections
  • Faulty cylinder deactivation system control solenoid
  • Bad cylinder deactivation system sensor/switch
  • PCM failure

What are the Common Symptoms of the P3497 Code?

See also  P0300 Code: Random or Multiple Cylinder Misfire Detected

How to Diagnose the P3497 Code

Different makes and models can set the error code P3497. But this does not mean that there is a one-size-fits-all approach to diagnosing its underlying cause. The steps for troubleshooting this code will vary depending on your vehicle.

Check out the video below to get an idea of what the diagnostic process for this code might involve:

How to Fix the P3497 Code

Code P3497 shares similar triggers and symptoms with other engine codes. However, the appropriate diagnostic and repair procedure will depend on the specifications of your vehicle. So if you’re unfamiliar with auto repair, it’s best to leave the job to a mechanic.

If you’re considering troubleshooting this code on your own, it’s a good idea to refresh your automotive knowledge before attempting any fixes. Consult a vehicle-specific repair manual or an online repair database to learn the appropriate diagnostic procedures for this code.

About The Authors
Anthony Harlin, ASE Certified Master Automobile Technician
Anthony Harlin, ASE Certified Master Automobile Technician

Technical Reviewer at

Tony Harlin is a Master Gas and Diesel Diagnostic Technician with over 18 years of experience. He works full-time at a large independent automotive shop as a driveability and repair technician working on all types of vehicles with a focus on diesels. ASE certifications include A1-A9, L1 and L2, as well as X1.

CarParts Research Team Research Team

Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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