A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, a vehicle is complicated and there are various causes why a light might come on. If your glow plug light comes on while driving your Opel Zafira Tourer, it might show several things. In the following paragraphs, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Opel Zafira Tourer works, and then the different reasons it lights up when you are driving

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What is the purpose of my Opel Zafira Tourer glow plug light?

The main goal of the engine glow plug light, which is in most cases represented by a yellow coil, is to make sure that your glow plugs are working properly. In fact, it must light up when you switch on your Opel Zafira Tourer 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 automobile. But, if it comes on while driving, it may reveal multiple issues, we will try to explain the most important ones.

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

A glow light that comes on while driving on your Opel Zafira Tourer or at any other time other than when the engine is started is intended to notify you to a fault other than your spark plugs, we will check out this right now. Whatever the case, plug in your car to the diagnostic tool will allow you to accurately interpret the motive for the light up of your glow light.

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

The first possibility is that you recognize that your glow plug light comes on while driving your Opel Zafira Tourer and that you also experience a loss of power. In this instance, several trouble can describe its presence. Here is a list of the most important causes:

  • Trouble of EGR valve, in reality, if you go through a loss of power, it is possible that your EGR valve is clogged, in such a case, it is obvious that your preheat light comes on while driving on Opel Zafira Tourer because it is one of the failures of which it is supposed to notify you. Have the status of your valve checked
  • Issue related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can cause turbo boost and a disturbance in the performance of the turbo.
  • Issue related 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 functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Opel Zafira Tourer coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 Zafira Tourer

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

  • 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 fix the issue.
  • You have a false contact somewhere in your electrical circuit, test out the other alternatives first because it is not easy to find it alone, we encourage you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

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