A new warning light on your dashboard? You don’t understand why it doesn’t turn off… It’s typical, a vehicle is complicated and there are many factors why a light might come on. If it turns out your glow plug light comes on while driving your Fiat Ducato, it might point out several issues. In the following paragraphs, we will do anything we can to help you see things more clearly. First, we will see how the preheating light on your Fiat Ducato functions, and then the different explanations it lights up when you are driving

glow-plug-light-fiat-ducato

What is the goal of my Fiat Ducato glow plug light?

The main purpose of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to make sure that your glow plugs are working effectively. Indeed, it must light up when you switch on your Fiat Ducato 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 meant to stay or come on while driving with your car. But, if it turns on while driving, it may indicate different issues, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Fiat Ducato?

A glow light that comes on while driving on your Fiat Ducato 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 check out this right now. No matter the reason, connecting your vehicle to the diagnostic tool will allow you to carefully understand the cause for the light up of your glow light.

My Fiat Ducato glow light comes on and I’m suffering from a loss of power

The first probability is that you detect that your glow plug light comes on while driving your Fiat Ducato and that you also knowledge a loss of power. In this case, several trouble can describe its lightning. Here is a list of the main factors:

  • Problem of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is clogged, in such a case, it is obvious that your preheat light comes on while driving on Fiat Ducato because it is one of the failures of which it is meant to warn you. Have the status of your valve examined
  • Problem 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.
  • Problem relevant 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 disturb its proper function.
  • Finally, the last trouble that could lead to a glow indicator light on your Fiat Ducato 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 Fiat Ducato

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Fiat Ducato without you feeling any difference in power or car behaviour. Generally, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, 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 solve the trouble.
  • You have a false contact somewhere in your electrical circuit, test out the other options first because it is not easy to find it alone, we suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • In the event that you have any additional questions about the Fiat Ducato, do not hesitate to consult our Fiat Ducato category.