A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, an auto is complex and there are many motives why a light could occur. If it turns out your glow plug light comes on while driving your Honda Civic, it might reveal some concerns. In this article, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your Honda Civic functions, and then the different reasons it lights up when you are driving

glow-plug-light-honda-civic

What is the purpose of my Honda Civic glow plug light?

The primary purpose of the engine glow plug light, which is most of the time represented by a yellow coil, is to guarantee that your glow plugs are working effectively. Indeed, it must light up when you switch on your Honda Civic 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 supposed to stay or come on while driving with your vehicle. But, if it comes on while driving, it may suggest 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 Honda Civic?

A glow light that comes on while driving on your Honda Civic or at any other time other than when the engine is started is intended to inform you to a fault other than your spark plugs, we will check out this right now. In any case, connecting your vehicle to the diagnostic tool will allow you to accurately understand the motive for the light up of your glow light.

My Honda Civic glow light comes on and I’m going through a loss of power

The first probability is that you recognize that your glow plug light comes on while driving your Honda Civic and that you also encounter a loss of power. In such a case, some complications can explain its presence. Here is a list of the most important motives:

  • Trouble of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this case, it is logical that your preheat light comes on while driving on Honda Civic because it is one of the issue of which it is meant to warn you. Have the status of your valve looked at
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about turbo boost and a disturbance in the operation of the turbo.
  • Problem linked to the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that affect its proper performance.
  • Finally, the last trouble that could lead to a glow indicator light on your Honda Civic coupled with a loss of power, is that your fuel filter is too dirty, you should feel 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 Honda Civic

Finally, we’ll give you the reasons for a glow plug light that comes on on your Honda Civic without you feeling any difference in power or vehicle behaviour. Ordinarily, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, test and change 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 resolve the trouble.
  • You have a false contact somewhere in your electrical circuit, test the other solutions first because it is not easy to find it alone, we advise you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Honda Civic, take a look at the Honda Civic category.