A new warning light on your dashboard? You don’t understand why it doesn’t turn off… It’s normal, a vehicle is elaborate and there are multiple factors why a light may come on. If your glow plug light comes on while driving your Volvo XC90, it may signify some issues. In this post, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your Volvo XC90 operates, and then the different reasons it lights up when you are driving

glow-plug-light-volvo-xc90

What is the goal of my Volvo XC90 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 assure that your glow plugs are working correctly. Indeed, it must light up when you switch on your Volvo XC90 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 supposed to stay or come on while driving with your automobile. However, if it turns on while driving, it may indicate multiple troubles, we will try to detail the most important ones.

What to do if the glow plug light comes on while driving on my Volvo XC90?

A glow light that comes on while driving on your Volvo XC90 or at any other time other than when the engine is started is intended to notify 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 accurately interpret the reason for the light up of your glow light.

My Volvo XC90 glow light comes on and I’m encountering a loss of power

The first possibility is that you recognize that your glow plug light comes on while driving your Volvo XC90 and that you also experience a loss of power. In such a case, some concerns can demonstrate its presence. Here is a list of the most important factors:

  • Trouble of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is clogged, in this case, it is obvious that your preheat light comes on while driving on Volvo XC90 because it is one of the issue of which it is intended to notify 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 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 malfunctioned by filings or other possible foreign bodies that affect its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Volvo XC90 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 Volvo XC90

To finish , we’ll give you the reasons for a glow plug light that comes on on your Volvo XC90 without you feeling any difference in power or automobile behaviour. In general, 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 get rid of the trouble.
  • 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 recommend you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • Whenever you have any additional questions about the Volvo XC90, do not hesitate to consult our Volvo XC90 category.