Feedback

Error Code P2344: What It Means & What To Do?

OBD Code P2344 - Cylinder 9 Above Knock Threshold

<<See All OBD Codes

Are you wondering as to how this error code got stored in your vehicle? Keep reading further to know more information about the P2344 error code. When this error code is set in the vehicle, it actually means that the voltage input reading which is received from the #9 cylinder is not within the anticipated parameters. The function of the knock sensor is to let the PCM know about any strange noises which relate to the cylinder detonation.

Learn More About OBD Error Code P2344

The sensor functions as a type of microphone, which carefully listens to the ping noise that the cylinder makes when the engine fires. The circuit of the knock sensor is usually made up of 5-volt signal wire.


What causes this problem with the Cylinder 9 Above Knock Threshold?


  • The knock sensor might be broken.
  • The wires or the connectors might be defective or the connections might be loose.
  • Irregular fuel to air ratio which causes a difference in cylinder ignition.
  • Malfunctions due to the firing of other cylinders.

Replace/Repair These Parts To Fix Code P2344

  1. Knock sensor - Avoid the P2344 error by replacing the damaged knock sensor as it can cause engine performance issues.
  2. Cylinder head gasket - Presence of white smokes and bubbles from the radiator is an indication that the cylinder head gasket is faulty. Replace it as quickly as possible.
  3. Sensor connector - Avoid the P2344 error code be replacing the faulty sensor connector from PartsAvatar at the best prices online.
  4. Intake manifold - A damaged intake manifold will show a decrease in power, fuel economy and acceleration. It is best to replace it as instantly as possible.
  5. Engine control module - The engine control module is considered to be the brain of the engine management system. So if your ECM is not functioning properly, then an immediate replacement is needed so that the system functions normally.
  6. Fuel injector - Does your engine face trouble during acceleration? Does your vehicle experience start trouble? Then the fuel injector can be defective. Change them as soon as possible.
  7. Spark plugIf the vehicle experiences difficulty in starting, then the spark plugs can be malfunctioning. Change the defective spark plugs instantly.
  8. Powertrain control module - A faulty PCM can cause misfiring issues and the engine behavior might also be erratic. If your vehicle is causing misfiring issues, then it is because of a faulty powertrain control module. Shop them from Parts Avatar at best prices online.

Symptoms Of The OBD Error Code P2344

Next important thing you need to know about are the common symptoms for this OBD error code P2344 with your fuel volume control.


Common Symptoms


  • The engine light will keep flashing by staying on for more time or it may blink on and off irregularly.
  • Acceleration by the vehicle will be slow, power will be low while driving and you will witness spark knock.
  • Spark knock might occur due to fuel detonation other than the anticipated proper burn as firing by the cylinder which is also known as engine knock or pinging.

How To Correct P2344 Cylinder 9 Above Knock Threshold

Wish to correct this error code with your vehicle? Do you know what all you should do to make your car free from this code? Well, don’t worry! We are here to guide you.


  • The damaged wires or connectors of the knock sensor must be changed.
  • Changing the knock sensor.
  • Replacing the damaged engine components like a fuel injector.

If you need parts to fix this issue, you no longer need to search for them. We at PartsAvatar Canada have an extensive range of auto parts in stock from you like PCM, ECM, spark plug, intake manifold, fuel injector, knock sensor, cylinder head, sensor connection ranging from all replacement parts to all interior and exterior parts.

Easy Diagnosis Of Engine Error OBD Code P2344

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:


  • Diagnosing this DTC may require:
  • Attach a scan tool to the vehicle so that the data can be recorded and if there are any concurrent trouble codes they can be noted.
  • If there are any diagnostic trouble codes in the computer of the vehicle, they have to be cleared first and then the vehicle has to be tested to see if the problems keep showing up.
  • Every wires and connector have to be checked for erosion and other defects.
  • Visually check for any loose connections.
  • The conditions, as well as the level of the engine oil, has to be carefully inspected.
  • Carefully listen to the engine while it keeps running to see as to if there is any unnecessary noise which can be heard.
  • The pressure has to match the specification of the manufacturer and so a manual oil pressure test has to be performed.
  • The reference voltage has to be checked by separating the connector of the knock sensor.

Common Mistakes When Diagnosing The P2344 Code


  • The calibration of the fuel injector must move into the PCM.
  • The fuel injector might be faulty.
  • Malfunctioning of the PCM.
  • The electrical wires might cause some problem.

Other Diagnostic Codes Related To OBD Code P2344

P2336 - Cylinder 1 Above Knock Threshold

P2337 - Cylinder 2 Above Knock Threshold

P2338 - Cylinder 3 Above Knock Threshold

P2339 - Cylinder 4 Above Knock Threshold

P2340 - Cylinder 5 Above Knock Threshold

P2341 - Cylinder 6 Above Knock Threshold

P2342 - Cylinder 7 Above Knock Threshold

P2343 - Cylinder 8 Above Knock Threshold

P2345 - Cylinder 10 Above Knock Threshold

P2346 - Cylinder 11 Above Knock Threshold

P2347 - Cylinder 12 Above Knock Threshold