A new warning light on your dashboard? You don’t figure out why it doesn’t turn off… It’s normal, an auto is complex and there are various causes why a light could occur. In cases where your glow plug light comes on while driving your Audi A1, it might suggest different issues. In this post, we will do everything we can to help you see things more clearly. First, we will find out how the preheating light on your Audi A1 functions, and then the different explanations it lights up when you are driving

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What is the purpose of my Audi A1 glow plug light?

The main role of the engine glow plug light, which is most of the time symbolized 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 Audi A1 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 expected to stay or come on while driving with your motor vehicle. Nevertheless, if it comes on while driving, it may show multiple failures, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my Audi A1?

A glow light that comes on while driving on your Audi A1 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 take a look at this now. In any case, a switch to the diagnostic tool will allow you to accurately understand the motive for the light up of your glow light.

My Audi A1 glow light comes on and I’m suffering from a loss of power

The first probability is that you perceive that your glow plug light comes on while driving your Audi A1 and that you also knowledge a loss of power. In such a case, different problems can explain its lightning. Here is a list of the main causes:

  • Problem of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Audi A1 because it is one of the issue of which it is meant to notify you. Have the status of your valve checked
  • Trouble linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about turbo boost and a perturbation 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 disturb its proper performing.
  • Finally, the last problem that could lead to a glow indicator light on your Audi A1 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 Audi A1

Finally, we’ll give you the explanations for a glow plug light that comes on on your Audi A1 without you feeling any difference in power or motor vehicle behaviour. In most cases, this is an electronic problem:

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

    • If you need more guides on the Audi A1, go to our Audi A1 category.