A new light on your dashboard? You don’t find out why it doesn’t turn off… It’s typical, an automobile is complex and there are various factors why a light might occur. If your glow plug light comes on while driving your Opel Grandland X, it might show some concerns. In this article, we will do anything we can to support you see things more clearly. First, we will find out how the preheating light on your Opel Grandland X functions, and then the different explanations it lights up when you are driving

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What is the goal of my Opel Grandland X glow plug light?

The main role of the engine glow plug light, which is generally represented by a yellow coil, is to assure that your glow plugs are working effectively. In fact, it must light up when you switch on your Opel Grandland X to tell you that they are heating the intake air in your cylinders and must go out after a few moments when the engine is running. This preheat light is therefore not expected to stay or come on while driving with your car. But, if it comes on while driving, it may show several issues, we will try to summarize the most important ones.

What to do if the glow plug light comes on while driving on my Opel Grandland X?

A glow light that comes on while driving on your Opel Grandland X or at any other time other than when the engine is started is intended to warn you to a problem other than your spark plugs, we will look at this now. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to precisely translate the cause for the light up of your glow light.

My Opel Grandland X glow light comes on and I’m experiencing a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Opel Grandland X and that you also encounter a loss of power. In this case, some trouble can explain its presence. Here is a list of the most important factors:

  • Problem of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is blocked, in such a case, it is expected that your preheat light comes on while driving on Opel Grandland X because it is one of the issue of which it is expected to alert you. Have the status of your valve checked out
  • Problem related to 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 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 broken 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 Opel Grandland X coupled with a loss of power, is that your fuel filter is too dirty, you should encounter 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 Opel Grandland X

Finally, we’ll give you the explanations for a glow plug light that comes on on your Opel Grandland X without you feeling any difference in power or car behaviour. Ordinarily, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, 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 fix 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 suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Opel Grandland X, take a look at the Opel Grandland X category.