A new light on your dashboard? You don’t understand why it doesn’t switch off… It’s normal, a vehicle is complicated and there are many reasons why a light may occur. In cases where your glow plug light comes on while driving your Citroen C5 Aircross, it may point out several problems. In this article, 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 C5 Aircross works, and then the different explanations it lights up when you are driving

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What is the purpose of my Citroen C5 Aircross glow plug light?

The primary intent of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to ensure that your glow plugs are working correctly. In fact, it must light up when you switch on your Citroen C5 Aircross 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 supposed to stay or come on while driving with your motor vehicle. But, if it comes on while driving, it may suggest multiple troubles, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Citroen C5 Aircross?

A glow light that comes on while driving on your Citroen C5 Aircross or at any other time other than when the engine is started is designed to warn you to a fault other than your spark plugs, we will check out this now. Whatever the 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 C5 Aircross glow light comes on and I’m having a loss of power

The first possibility is that you recognize that your glow plug light comes on while driving your Citroen C5 Aircross and that you also encounter a loss of power. In this instance, several trouble can explain its lightning. Here is a list of the most important reasons:

  • Problem of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is logical that your preheat light comes on while driving on Citroen C5 Aircross because it is one of the issue of which it is expected to warn you. Have the status of your valve inspected
  • Problem 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 perturbation in the performance of the turbo.
  • Problem 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 disrupt its proper operation.
  • Finally, the last issue that could lead to a glow indicator light on your Citroen C5 Aircross coupled with a loss of power, is that your fuel filter is too dirty, you should 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 Citroen C5 Aircross

To finish , we’ll give you the explanations for a glow plug light that comes on on your Citroen C5 Aircross without you feeling any difference in power or motor vehicle behaviour. Generally, this is an electronic fault:

  • Glow plug relays or fuses to be changed, 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 suggest you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • If perhaps you have any further questions about the Citroen C5 Aircross, do not hesitate to consult our Citroen C5 Aircross category.