A new warning light on your dashboard? You don’t figure out why it doesn’t switch off… It’s typical, an automobile is complicated and there are various reasons why a light may occur. If your glow plug light comes on while driving your Fiat Doblo Cargo, it might indicate some things. In this post, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Fiat Doblo Cargo works, and then the different reasons it lights up when you are driving

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

The primary goal of the engine glow plug light, which is in most cases represented 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 Fiat Doblo Cargo 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 supposed to stay or come on while driving with your automobile. But, if it comes on while driving, it may reveal multiple issues, we will try to describe the main ones.

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

A glow light that comes on while driving on your Fiat Doblo Cargo or at any other time other than when the engine is started is intended to inform you to a problem other than your spark plugs, we will look at this now. No matter the reason, a switch to the diagnostic tool will allow you to carefully interpret the reason for the light up of your glow light.

My Fiat Doblo Cargo glow light comes on and I’m encountering a loss of power

The first situation is that you recognize that your glow plug light comes on while driving your Fiat Doblo Cargo and that you also encounter a loss of power. In this case, some problems can explain its lightning. Here is a list of the main reasons:

  • Issue of EGR valve, in reality, if you undergo 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 Fiat Doblo Cargo because it is one of the problem of which it is designed to notify you. Have the status of your valve checked
  • Issue associated with 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 operation of the turbo.
  • Issue associated with the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disrupt its proper performance.
  • Finally, the last trouble that could lead to a glow indicator light on your Fiat Doblo Cargo 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 Fiat Doblo Cargo

Finally, we’ll give you the reasons for a glow plug light that comes on on your Fiat Doblo Cargo without you feeling any difference in power or automobile behaviour. In most cases, this is an electronic problem:

  • 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 fix the trouble.
  • 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 advise you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

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