A new light on your dashboard? You don’t figure out why it doesn’t shut off… It’s normal, an auto is elaborate and there are multiple motives why a light could come on. If your glow plug light comes on while driving your Citroen C4 Aircross, it may signal some concerns. In the following paragraphs, we will do anything we can to support you see things more clearly. First, we will find out how the preheating light on your Citroen C4 Aircross functions, and then the different motives it lights up when you are driving

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What is the goal of my Citroen C4 Aircross glow plug light?

The primary purpose of the engine glow plug light, which is most of the time represented 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 Citroen C4 Aircross 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 vehicle. However, if it comes on while driving, it may reveal different issues, we will try to point out the most important ones.

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

A glow light that comes on while driving on your Citroen C4 Aircross or at any other time other than when the engine is started is meant to warn you to a fault other than your spark plugs, we will check out this now. In any case, connecting your vehicle to the diagnostic tool will allow you to accurately understand the cause for the light up of your glow light.

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

The first probability is that you identify that your glow plug light comes on while driving your Citroen C4 Aircross and that you also knowledge a loss of power. In such a case, some trouble can demonstrate its lightning. Here is a list of the most important motives:

  • Trouble of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is clogged, in this instance, it is expected that your preheat light comes on while driving on Citroen C4 Aircross because it is one of the issue of which it is meant to warn you. Have the status of your valve tested
  • Issue linked 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 perturbation in the performance of the turbo.
  • Issue in connection with 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 Citroen C4 Aircross 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 Citroen C4 Aircross

To conclude, we’ll give you the motives for a glow plug light that comes on on your Citroen C4 Aircross without you feeling any difference in power or vehicle behaviour. Generally, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, 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 resolve the issue.
  • You have a false contact somewhere in your electrical circuit, check the other solutions first because it is not easy to find it alone, we recommend you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • If you wish more tutorials on the Citroen C4 Aircross, go to our Citroen C4 Aircross category.