A new warning light on your dashboard? You don’t find out why it doesn’t shut off… It’s normal, an auto is complicated and there are multiple reasons why a light might come on. In cases where your glow plug light comes on while driving your Honda Fit, it may possibly signal some things. In the following paragraphs, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Honda Fit operates, and then the different motives it lights up when you are driving

glow-plug-light-honda-fit

What is the role of my Honda Fit glow plug light?

The main purpose of the engine glow plug light, which is generally 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 Fit 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. Nevertheless, if it comes on while driving, it may show multiple issues, we will try to explain the main ones.

What to do if the glow plug light comes on while driving on my Honda Fit?

A glow light that comes on while driving on your Honda Fit or at any other time other than when the engine is started is meant to warn you to a problem other than your spark plugs, we will look at this now. Whatever the case, plug in your car to the diagnostic tool will allow you to properly translate the explanation for the light up of your glow light.

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

The first probability is that you identify that your glow plug light comes on while driving your Honda Fit 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 main reasons:

  • Issue of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this case, it is expected that your preheat light comes on while driving on Honda Fit because it is one of the failures of which it is intended to notify you. Have the status of your valve checked
  • Issue associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can result in turbo boost and a disturbance in the operation of the turbo.
  • Issue linked to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disturb its proper operation.
  • Finally, the last issue that could lead to a glow indicator light on your Honda Fit 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 Fit

Finally, we’ll give you the motives for a glow plug light that comes on on your Honda Fit without you feeling any difference in power or vehicle behaviour. In general, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, 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 solve the issue.
  • You have a false contact somewhere in your electrical circuit, test out the other solutions first because it is not easy to find it alone, we advise you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error
  • If you want more tutorials on the Honda Fit, go to our Honda Fit category.