A new warning light on your dashboard? You don’t understand why it doesn’t switch off… It’s normal, a car is elaborate and there are multiple reasons why a light could come on. If your glow plug light comes on while driving your Dodge Grand Caravan, it might signal different things. On this page, we will do anything we can to help you see things more clearly. First, we will find out how the preheating light on your Dodge Grand Caravan works, and then the different reasons it lights up when you are driving

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What is the goal of my Dodge Grand Caravan glow plug light?

The primary intent of the engine glow plug light, which is generally represented by a yellow coil, is to guarantee that your glow plugs are working properly. In reality, it must light up when you switch on your Dodge Grand Caravan 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. Nevertheless, if it comes on while driving, it may suggest multiple issues, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Dodge Grand Caravan?

A glow light that comes on while driving on your Dodge Grand Caravan or at any other time other than when the engine is started is designed to warn you to a problem other than your spark plugs, we will look at this right now. Whatever the case, plug in your car to the diagnostic tool will allow you to properly translate the cause for the light up of your glow light.

My Dodge Grand Caravan glow light comes on and I’m encountering a loss of power

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

  • Problem of EGR valve, indeed, if you are affected a loss of power, it is possible that your EGR valve is blocked, in this instance, it is obvious that your preheat light comes on while driving on Dodge Grand Caravan because it is one of the problem of which it is expected to warn you. Have the status of your valve checked
  • Trouble related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can result in turbo boost and a disturbance in the operation of the turbo.
  • Trouble associated with the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that disrupt its proper functioning.
  • Finally, the last problem that could lead to a glow indicator light on your Dodge Grand Caravan 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 Dodge Grand Caravan

Finally, we’ll give you the reasons for a glow plug light that comes on on your Dodge Grand Caravan without you feeling any difference in power or vehicle behaviour. In general, this is an electronic problem:

  • 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 solve the problem.
  • You have a false contact somewhere in your electrical circuit, test the other alternatives first because it is not easy to find it alone, we suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you need more guides on the Dodge Grand Caravan, go to our Dodge Grand Caravan category.