A new light on your dashboard? You don’t figure out why it doesn’t shut off… It’s normal, an automobile is complex and there are many factors why a light could come on. In cases where your glow plug light comes on while driving your Opel Astra, it may possibly suggest different things. In this post, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Opel Astra works, and then the different explanations it lights up when you are driving

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What is the purpose of my Opel Astra glow plug light?

The primary purpose of the engine glow plug light, which is generally symbolized by a yellow coil, is to assure that your glow plugs are working properly. In fact, it must light up when you switch on your Opel Astra 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 meant to stay or come on while driving with your vehicle. Nevertheless, if it turns on while driving, it may reveal multiple issues, we will try to detail the most important ones.

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

A glow light that comes on while driving on your Opel Astra 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 right now. No matter the reason, a switch to the diagnostic tool will allow you to carefully interpret the motive for the light up of your glow light.

My Opel Astra glow light comes on and I’m suffering from a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Opel Astra and that you also encounter a loss of power. In this instance, different problems can demonstrate its presence. Here is a list of the most important factors:

  • Problem of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is blocked, in such a case, it is rational that your preheat light comes on while driving on Opel Astra because it is one of the problem of which it is meant to notify you. Have the status of your valve looked at
  • Issue 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 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 malfunctioned by filings or other possible foreign bodies that disrupt its proper operation.
  • Finally, the last trouble that could lead to a glow indicator light on your Opel Astra 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 Astra

To finish , we’ll give you the explanations for a glow plug light that comes on on your Opel Astra without you feeling any difference in power or vehicle behaviour. In general, this is an electronic problem:

  • 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 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 encourage you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error
  • In the event that you have any additional questions about the Opel Astra, do not hesitate to consult our Opel Astra category.