Honda Accord: A Look at The P1009 Diagnostic Code

Nicole H
Feb 12, 2021

Red 2021 Honda Accord From Driver Side

Yes, even Honda Accords have “Check Engine” lights, you just might see them less often than other models.  While the cause might be minor, it may also need your immediate attention.

Diagnostic codes help owners and mechanics know what’s wrong with a vehicle. If you’ve taken your car to the mechanic and had code P1009 pulled, you are likely to wonder what the problem is.

What’s the Honda Accord diagnostic code P1009?  

If you’ve pulled diagnostic code P1009 on a Honda Accord, it means there’s a problem with the variable valve timing control advanced malfunction. Some problems that can lead to this include: 

  • Engine oil problems 
  • Faulty VTC actuator 
  • Mechanical problems 
  • VTC blockage 

That sounds pretty serious, so what do you need to know if you get that error code? We’ve got you covered. This article will discuss what to do if you have a P1009 diagnostic code on your Honda Accord, so you can get your car back up and running quickly.

Possible Causes of a P1009 Diagnostic Code on a Honda Accord

Knowing that you have a variable valve timing control advanced malfunction problem doesn’t help much if you don’t know the cause of the malfunction. Sometimes, engine oil problems, like low oil levels or dirty engine oil, cause it.

Blockages in the VTC strainer or problems with the oil control solenoid or circuit can lead to this error. Faulty VTC actuators and engine mechanical problems are also causes.

One way to find the problem is to visually inspect the wiring harnesses and connectors on the VTC. If you don’t see a problem, it might be time to have it checked by a pro.

What is the Variable Valve Timing Control System?

The VTC system controls the intake of oil in the camshaft. It is connected to the vehicle’s computer and depends on oil pressure to operate properly.

The VTC system helps the engine operate at optimal efficiency and with the best possible performance. It also reduces emissions. When something’s not working right with the VTC, it can trigger the P1009 code on the Honda Accord.

To learn more about the VTC system on the Accord, check out this video.

How to Clean the VTC Actuator on a Honda Accord

Sometimes, all you need to do to clear this code is to clean the VTC valve to remove blockages and other problems with the actuator and valve. This video shows you how.

To begin, first remove the serpentine belt, auto-tensioner, and power steering pump. Access the VTC strainer filter and thoroughly clean the filter.

When removing all of these items, keep track of the bolts, so you know where they came from and how to put them back properly.

Next, remove the electrical connection from the VTC solenoid. Remove the valve and clean it. Then test it. Clean the electrical connection and the area in which the VTC valve goes. Put everything back where it belongs and see if the code clears.

If this doesn’t fix the problem, you may have dirty engine oil or a serious problem with your engine. It’s best to have a pro take a look to rule out any issues.

Check Engine Codes – Now What?

No matter what vehicle you purchase, it’s going to have problems. While Honda’s a trusted manufacturer, you might drive off the lot and the engine light comes on instantly. To make sure you’re protected, read your Vehicle History before making any purchase.

avatar Nicole H
Nicole H has been writing professionally for 15 years after stepping away from the education world. Married to an auto/diesel mechanic, cars have always been a part of her life.
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