Hi Guys hope you all are safe and doing well. I have come across an issue in my mk5 1.9tdi jetta 08. My glow plug light starts flashing when keeping in idel after some speeding.The car goes into limp home mode when the glow plug light is flashing and when the engine is switched off and on the error goes away. i have installed a cold air intake with a k&n filter about a month ago. Any body gone through such an issue?? Or any help to diagnose.