A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, an automobile is complicated and there are multiple motives why a light might occur. In cases where your glow plug light comes on while driving your Mazda CX 9, it may possibly signify some problems. In this article, we will do everything we can to help you see things more clearly. First, we will discover how the preheating light on your Mazda CX 9 functions, and then the different reasons it lights up when you are driving

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What is the goal of my Mazda CX 9 glow plug light?

The main intent of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to ensure that your glow plugs are working properly. In fact, it must light up when you switch on your Mazda CX 9 to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not expected to stay or come on while driving with your automobile. However, if it turns on while driving, it may show several troubles, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Mazda CX 9?

A glow light that comes on while driving on your Mazda CX 9 or at any other time other than when the engine is started is meant to notify you to a fault other than your spark plugs, we will look at this right now. Whatever the case, plug in your car to the diagnostic tool will allow you to properly translate the motive for the light up of your glow light.

My Mazda CX 9 glow light comes on and I’m going through a loss of power

The first situation is that you detect that your glow plug light comes on while driving your Mazda CX 9 and that you also knowledge a loss of power. In this case, some complications can describe its presence. Here is a list of the most important motives:

  • Problem of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is rational that your preheat light comes on while driving on Mazda CX 9 because it is one of the problem of which it is expected to notify you. Have the status of your valve tested
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can result in turbo boost and a perturbation in the operation of the turbo.
  • Problem relevant to the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disturb its proper function.
  • Finally, the last trouble that could lead to a glow indicator light on your Mazda CX 9 coupled with a loss of power, is that your fuel filter is too dirty, you should get jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my Mazda CX 9

To finish , we’ll give you the reasons for a glow plug light that comes on on your Mazda CX 9 without you feeling any difference in power or automobile behaviour. Ordinarily, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, test and replace if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to solve the trouble.
  • You have a false contact somewhere in your electrical circuit, test the other alternatives first because it is not easy to find it alone, we advise you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • To get more tips on the Mazda CX 9, take a look at the Mazda CX 9 category.