A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, a vehicle is complicated and there are multiple factors why a light could occur. In the event that your glow plug light comes on while driving your Cadillac CTS, it may possibly point out several concerns. In this article, we will do anything we can to support you see things more clearly. First, we will see how the preheating light on your Cadillac CTS works, and then the different explanations it lights up when you are driving

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What is the role of my Cadillac CTS glow plug light?

The main goal of the engine glow plug light, which is in most cases represented by a yellow coil, is to guarantee that your glow plugs are working effectively. In fact, it must light up when you switch on your Cadillac CTS 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 car. Nevertheless, if it comes on while driving, it may show different issues, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Cadillac CTS?

A glow light that comes on while driving on your Cadillac CTS or at any other time other than when the engine is started is designed to notify you to a problem other than your spark plugs, we will take a look at this now. In any case, connecting your vehicle to the diagnostic tool will allow you to properly understand the motive for the light up of your glow light.

My Cadillac CTS glow light comes on and I’m suffering from a loss of power

The first possibility is that you recognize that your glow plug light comes on while driving your Cadillac CTS and that you also knowledge a loss of power. In this case, several concerns can describe its lightning. Here is a list of the most important factors:

  • Issue of EGR valve, in reality, if you go through 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 Cadillac CTS because it is one of the failures of which it is designed to alert you. Have the status of your valve examined
  • Issue associated with 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 disturbance in the performance of the turbo.
  • Issue related 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 operation.
  • Finally, the last problem that could lead to a glow indicator light on your Cadillac CTS coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 Cadillac CTS

To finish , we’ll give you the explanations for a glow plug light that comes on on your Cadillac CTS without you feeling any difference in power or car 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 options 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

    • If you need more guides on the Cadillac CTS, go to our Cadillac CTS category.