A new light on your dashboard? You don’t figure out why it doesn’t switch off… It’s normal, an auto is complicated and there are various factors why a light may come on. In cases where your glow plug light comes on while driving your Peugeot 806, it may possibly signal several concerns. In this article, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Peugeot 806 operates, and then the different explanations it lights up when you are driving

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What is the goal of my Peugeot 806 glow plug light?

The main goal of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to assure that your glow plugs are working correctly. Indeed, it must light up when you switch on your Peugeot 806 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 supposed to stay or come on while driving with your automobile. Nevertheless, if it comes on while driving, it may reveal multiple 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 Peugeot 806?

A glow light that comes on while driving on your Peugeot 806 or at any other time other than when the engine is started is intended to alert you to a fault 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 precisely translate the cause for the light up of your glow light.

My Peugeot 806 glow light comes on and I’m experiencing a loss of power

The first situation is that you recognize that your glow plug light comes on while driving your Peugeot 806 and that you also experience a loss of power. In this case, several trouble can demonstrate its lightning. Here is a list of the most important factors:

  • Trouble of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is blocked, in such a case, it is rational that your preheat light comes on while driving on Peugeot 806 because it is one of the problem of which it is expected to alert 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 result in turbo boost and a perturbation in the operation of the turbo.
  • Trouble relevant to the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that disrupt its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Peugeot 806 coupled with a loss of power, is that your fuel filter is too dirty, you should come to 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 Peugeot 806

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Peugeot 806 without you feeling any difference in power or automobile behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be changed, 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 fix 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 auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Peugeot 806, take a look at the Peugeot 806 category.