Overheating and indicator lights on the Opel Antara 2008: Possible defect in the coolant temperature sensor

Hello, I recently had similar problems with my 2011 Opel Insignia. My check engine light also stayed on constantly. After taking my car to the garage, it turned out that the engine control unit was faulty. It was a serious fault and affected the entire functioning of my car. Based on my experience, I would strongly advise you to simply take the car to a garage. Have the mechanic do a full check, maybe it's not just the coolant sensor. Either way, the problem should be fixed and hopefully your car will run smoothly again. Don't panic, you're not alone! We've all been through something similar at some point. Good luck with it!

(Translated from German)

Thank you for your quick reply! It reassures me a little to know that I'm not the only one with such problems. A defective engine control unit sounds pretty serious, of course, so I really won't be able to avoid taking my car to the garage. Can you remember how much this repair cost you? And have there been any other complications or similar problems since then? Thanks again for your help!

(Translated from German)

Yes, I remember it well, because the whole thing was quite a shock to my wallet. The repair of my defective engine control unit cost a whopping €1000. So, be prepared for that. But since then, my car has been running like clockwork again. No further problems or complications. And the best thing is, the problem with the coolant temperature sensor was also fixed right away since the mechanic had a look over it. So overall it was expensive, but at least everything was fixed. Good luck and hopefully you'll soon have no more headaches with your car!

(Translated from German)

Hi, thanks for the honest answer. 1000€ is of course not a small sum, but if it fixes all the problems, it's probably worth it. Your experience gives me hope that my Opel Antara will soon be running smoothly again. I will now start looking for a trustworthy garage. Thank you for your help and advice. It was definitely very helpful! Best regards!

(Translated from German)

Hello I have an Opel ANTARA 2.0 CDTI from 2011, the engine is HEATING since yesterday and the Ventilo starts quickly (barely 200 meters). At FEU VERT the Valise says: Code P1446. Is this overheating a logical consequence? Or has the mechanic minimized the problem? THANK YOU for any reply

(Translated from French)

The P1446 code indicates a problem with the evaporative emission control system, which is unlikely to cause overheating. Your overheating issue might be due to a faulty thermostat, water pump, or a clogged radiator. I would recommend starting with checking the coolant level and the thermostat. If the problem persists, it's best to have a mechanic inspect the water pump and the radiator. Please keep us updated on your progress. Do you have any other questions?

I have a SEAT LEON FR year 2014 Engine 1.8T, the problem I have is that the temperature indicator marks it when you want, sometimes without demanding the vehicle the engine fan works very hard, but if I turn off the car and wait 15sec and turn it back on and begins to mark the normal temperature. What is the reason for this?

(Translated from Spanish)

This could be due to a faulty coolant temperature sensor, which is responsible for sending the engine temperature information to the car's computer. When it's not working properly, it can cause the fan to run excessively and the temperature gauge to give inaccurate readings. I recommend starting with replacing the coolant temperature sensor. If the problem persists, it might be a good idea to have a mechanic inspect the wiring and the engine control unit. Please keep us updated on your progress. Do you have any other questions?