A new warning light on your dashboard? You don’t understand why it doesn’t turn off… It’s normal, a car is complicated and there are various motives why a light may occur. In the event that your glow plug light comes on while driving your Opel Corsa, it might reveal different problems. In this post, we will do everything we can to support you see things more clearly. First, we will find out how the preheating light on your Opel Corsa functions, and then the different motives it lights up when you are driving

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What is the goal of my Opel Corsa glow plug light?

The primary role of the engine glow plug light, which is generally represented by a yellow coil, is to ensure that your glow plugs are working correctly. In reality, it must light up when you switch on your Opel Corsa 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 supposed to stay or come on while driving with your car. But, if it comes on while driving, it may show multiple troubles, we will try to point out the main ones.

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

A glow light that comes on while driving on your Opel Corsa or at any other time other than when the engine is started is designed to notify you to a problem other than your spark plugs, we will take a look at this right now. In any case, plug in your car to the diagnostic tool will allow you to precisely interpret the cause for the light up of your glow light.

My Opel Corsa glow light comes on and I’m going through a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Opel Corsa and that you also knowledge a loss of power. In this case, different problems can describe its presence. Here is a list of the main motives:

  • Issue of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is clogged, in this instance, it is obvious that your preheat light comes on while driving on Opel Corsa because it is one of the failures of which it is expected to warn you. Have the status of your valve tested
  • Issue associated with 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 relevant 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 affect its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Opel Corsa coupled with a loss of power, is that your fuel filter is too dirty, you should come to 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 Opel Corsa

Finally, we’ll give you the motives for a glow plug light that comes on on your Opel Corsa without you feeling any difference in power or car behaviour. Generally, 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 fix the issue.
  • 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 mechanic.
  • Faulty injection pressure sensor, ECU error

    • To discover more tips on the Opel Corsa, take a look at the Opel Corsa category.