A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, an auto is elaborate and there are many reasons why a light could come on. If it turns out your glow plug light comes on while driving your Peugeot 4007, it may show different concerns. On this page, we will do anything we can to help you see things more clearly. First, we will see how the preheating light on your Peugeot 4007 functions, and then the different causes it lights up when you are driving

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What is the goal of my Peugeot 4007 glow plug light?

The primary role 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 correctly. In reality, it must light up when you switch on your Peugeot 4007 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 car. However, if it comes on while driving, it may indicate multiple failures, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Peugeot 4007?

A glow light that comes on while driving on your Peugeot 4007 or at any other time other than when the engine is started is meant to inform you to a problem other than your spark plugs, we will look at this now. In any case, a switch to the diagnostic tool will allow you to properly interpret the reason for the light up of your glow light.

My Peugeot 4007 glow light comes on and I’m suffering from a loss of power

The first probability is that you notice that your glow plug light comes on while driving your Peugeot 4007 and that you also encounter a loss of power. In such a case, different problems can explain its lightning. Here is a list of the main reasons:

  • Problem of EGR valve, in fact, if you go through a loss of power, it is possible that your EGR valve is blocked, in this instance, it is rational that your preheat light comes on while driving on Peugeot 4007 because it is one of the problem of which it is meant to warn you. Have the status of your valve looked at
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a disturbance in the performance of the turbo.
  • Problem linked to the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that affect its proper function.
  • Finally, the last issue that could lead to a glow indicator light on your Peugeot 4007 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 Peugeot 4007

To finish , we’ll give you the causes for a glow plug light that comes on on your Peugeot 4007 without you feeling any difference in power or car 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 fix 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 advise you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • To get more tips on the Peugeot 4007, take a look at the Peugeot 4007 category.