A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, an auto is complicated and there are various motives why a light could come on. In cases where your glow plug light comes on while driving your Fiat Doblo, it might indicate several 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 Fiat Doblo works, and then the different motives it lights up when you are driving

glow-plug-light-fiat-doblo

What is the purpose of my Fiat Doblo glow plug light?

The main intent of the engine glow plug light, which is most of the time represented by a yellow coil, is to ensure that your glow plugs are working properly. In fact, it must light up when you switch on your Fiat Doblo 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 expected to stay or come on while driving with your automobile. However, if it turns on while driving, it may suggest multiple troubles, we will try to point out the main ones.

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

A glow light that comes on while driving on your Fiat Doblo 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 right now. Whatever the case, a switch to the diagnostic tool will allow you to carefully understand the motive for the light up of your glow light.

My Fiat Doblo glow light comes on and I’m going through a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Fiat Doblo and that you also knowledge a loss of power. In this instance, several concerns can explain its presence. Here is a list of the main motives:

  • Trouble of EGR valve, in reality, if you are affected a loss of power, it is possible that your EGR valve is blocked, in this case, it is obvious that your preheat light comes on while driving on Fiat Doblo because it is one of the failures of which it is meant to alert you. Have the status of your valve inspected
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can bring about 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 damaged by filings or other possible foreign bodies that disrupt its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Fiat Doblo 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 Doblo

To conclude, we’ll give you the motives for a glow plug light that comes on on your Fiat Doblo without you feeling any difference in power or automobile behaviour. In general, this is an electronic fault:

  • 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 resolve the issue.
  • You have a false contact somewhere in your electrical circuit, test the other solutions first because it is not easy to find it alone, we encourage you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Fiat Doblo, take a look at the Fiat Doblo category.