A new warning light on your dashboard? You don’t figure out why it doesn’t switch off… It’s typical, a vehicle is complicated and there are many factors why a light might come on. If your glow plug light comes on while driving your Peugeot 508, it may possibly indicate different things. In this post, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Peugeot 508 works, and then the different reasons it lights up when you are driving

glow-plug-light-peugeot-508

What is the goal of my Peugeot 508 glow plug light?

The primary intent of the engine glow plug light, which is generally represented by a yellow coil, is to assure that your glow plugs are working correctly. In reality, it must light up when you switch on your Peugeot 508 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 car. But, if it comes on while driving, it may reveal different failures, we will try to explain the main ones.

What to do if the glow plug light comes on while driving on my Peugeot 508?

A glow light that comes on while driving on your Peugeot 508 or at any other time other than when the engine is started is meant to warn you to a fault other than your spark plugs, we will check out this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to carefully interpret the cause for the light up of your glow light.

My Peugeot 508 glow light comes on and I’m going through a loss of power

The first probability is that you identify that your glow plug light comes on while driving your Peugeot 508 and that you also experience a loss of power. In this case, different problems can explain its presence. Here is a list of the main factors:

  • Problem of EGR valve, indeed, if you are affected a loss of power, it is possible that your EGR valve is blocked, in such a case, it is obvious that your preheat light comes on while driving on Peugeot 508 because it is one of the failures of which it is supposed to warn you. Have the status of your valve inspected
  • Trouble related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can lead to turbo boost and a perturbation in the performance of the turbo.
  • Trouble relevant 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 disrupt its proper performance.
  • Finally, the last problem that could lead to a glow indicator light on your Peugeot 508 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 Peugeot 508

To finish , we’ll give you the reasons for a glow plug light that comes on on your Peugeot 508 without you feeling any difference in power or car behaviour. In general, this is an electronic fault:

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

    • If perhaps you have any further questions about the Peugeot 508, do not hesitate to consult our Peugeot 508 category.