A new light on your dashboard? You don’t figure out why it doesn’t turn off… It’s typical, a vehicle is complicated and there are various factors why a light may occur. If your glow plug light comes on while driving your Citroen C4 Picasso 2, it may signify different issues. In this article, we will do anything we can to help you see things more clearly. First, we will find out how the preheating light on your Citroen C4 Picasso 2 functions, and then the different motives it lights up when you are driving

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What is the purpose of my Citroen C4 Picasso 2 glow plug light?

The main purpose of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to assure that your glow plugs are working properly. In reality, it must light up when you switch on your Citroen C4 Picasso 2 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 vehicle. However, if it comes on while driving, it may reveal several failures, we will try to explain the most important ones.

What to do if the glow plug light comes on while driving on my Citroen C4 Picasso 2?

A glow light that comes on while driving on your Citroen C4 Picasso 2 or at any other time other than when the engine is started is intended to inform you to a fault other than your spark plugs, we will look at this right now. In any case, connecting your vehicle to the diagnostic tool will allow you to properly interpret the motive for the light up of your glow light.

My Citroen C4 Picasso 2 glow light comes on and I’m encountering a loss of power

The first situation is that you notice that your glow plug light comes on while driving your Citroen C4 Picasso 2 and that you also experience a loss of power. In this instance, different problems can explain its presence. Here is a list of the most important factors:

  • Problem of EGR valve, in reality, if you undergo a loss of power, it is possible that your EGR valve is clogged, in such a case, it is logical that your preheat light comes on while driving on Citroen C4 Picasso 2 because it is one of the failures of which it is supposed to notify you. Have the status of your valve looked at
  • Issue linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about 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 performance.
  • Finally, the last trouble that could lead to a glow indicator light on your Citroen C4 Picasso 2 coupled with a loss of power, is that your fuel filter is too dirty, you should get 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 Picasso 2

To finish , we’ll give you the motives for a glow plug light that comes on on your Citroen C4 Picasso 2 without you feeling any difference in power or vehicle behaviour. In most cases, 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 fix the trouble.
  • You have a false contact somewhere in your electrical circuit, check the other options first because it is not easy to find it alone, we advise you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • If you want more tutorials on the Citroen C4 Picasso 2, go to our Citroen C4 Picasso 2 category.