A new light on your dashboard? You don’t find out why it doesn’t turn off… It’s normal, a vehicle is complex and there are many reasons why a light could come on. In cases where your glow plug light comes on while driving your Audi Q2, it might point out several issues. In this post, we will do anything we can to help you see things more clearly. First, we will find out how the preheating light on your Audi Q2 operates, and then the different motives it lights up when you are driving

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What is the goal of my Audi Q2 glow plug light?

The primary role of the engine glow plug light, which is generally symbolized by a yellow coil, is to make sure that your glow plugs are working properly. In fact, it must light up when you switch on your Audi Q2 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 vehicle. However, if it comes on while driving, it may show different failures, we will try to summarize the most important ones.

What to do if the glow plug light comes on while driving on my Audi Q2?

A glow light that comes on while driving on your Audi Q2 or at any other time other than when the engine is started is intended to notify you to a fault 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 motive for the light up of your glow light.

My Audi Q2 glow light comes on and I’m experiencing a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Audi Q2 and that you also experience a loss of power. In this case, several complications can describe its presence. Here is a list of the most important reasons:

  • Trouble of EGR valve, in reality, if you are affected a loss of power, it is possible that your EGR valve is clogged, in this case, it is expected that your preheat light comes on while driving on Audi Q2 because it is one of the problem of which it is intended to notify you. Have the status of your valve checked out
  • Issue associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can cause turbo boost and a disturbance in the operation of the turbo.
  • Issue 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 disturb its proper performing.
  • Finally, the last problem that could lead to a glow indicator light on your Audi Q2 coupled with a loss of power, is that your fuel filter is too dirty, you should get 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 Audi Q2

To finish , we’ll give you the motives for a glow plug light that comes on on your Audi Q2 without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be swapped out, 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 out the other alternatives first because it is not easy to find it alone, we suggest you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Audi Q2, take a look at the Audi Q2 category.