A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s normal, an auto is complex and there are many reasons why a light might occur. If it turns out your glow plug light comes on while driving your Citroen C4 Spacetourer, it may suggest some issues. In this article, we will do everything we can to help you see things more clearly. First, we will discover how the preheating light on your Citroen C4 Spacetourer operates, and then the different explanations it lights up when you are driving

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What is the role of my Citroen C4 Spacetourer 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 reality, it must light up when you switch on your Citroen C4 Spacetourer 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 motor vehicle. However, if it turns on while driving, it may show different troubles, we will try to detail the most important ones.

What to do if the glow plug light comes on while driving on my Citroen C4 Spacetourer?

A glow light that comes on while driving on your Citroen C4 Spacetourer or at any other time other than when the engine is started is meant to alert you to a problem other than your spark plugs, we will look at this now. In any case, connecting your vehicle to the diagnostic tool will allow you to properly interpret the reason for the light up of your glow light.

My Citroen C4 Spacetourer glow light comes on and I’m suffering from a loss of power

The first situation is that you notice that your glow plug light comes on while driving your Citroen C4 Spacetourer and that you also encounter a loss of power. In such a case, some trouble can demonstrate its lightning. Here is a list of the most important reasons:

  • Issue of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is blocked, in such a case, it is logical that your preheat light comes on while driving on Citroen C4 Spacetourer because it is one of the issue of which it is supposed to warn you. Have the status of your valve inspected
  • Trouble linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can cause turbo boost and a disturbance in the operation of the turbo.
  • Trouble associated with the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that disturb its proper function.
  • Finally, the last issue that could lead to a glow indicator light on your Citroen C4 Spacetourer 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 Citroen C4 Spacetourer

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Citroen C4 Spacetourer without you feeling any difference in power or motor vehicle behaviour. In most cases, this is an electronic problem:

  • Glow plug relays or fuses to be changed, 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 get rid of the issue.
  • 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 recommend you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • To get more tips on the Citroen C4 Spacetourer, take a look at the Citroen C4 Spacetourer category.