Seeking Advice on Overheating and Persistent Check Engine Light Issues in a 2019 Volvo XC90 Diesel

Hey there! I've got some experience with something similar on my 2017 Volvo S60. Not a full-on mechanic, just a guy with some garage hours under his belt. Had the same overheating thing, check engine light, the whole deal. Turned out to be a defective cable connection/plug on my ride. Took it to my local workshop and they managed to diagnose and sort the problem pretty quickly. Cost me around 95 Euro, which wasn't too painful considering. Can you give more info on your specific vehicle? That way we can dive deeper into this and I might be able to give you more detailed advice based on your model and make. Cheers!

(Translated from German)

Hey! I appreciate the help. So my Volvo XC90 is rolling heavy at 124769 KM. The last service was carried out about a couple months back and I didn't face any issues till now. Just to give some additional info that might help - I usually take long drives and regularly service my car. Hope these details can support the brainstorming. Waiting to hear your thoughts! Cheers!

(Translated from German)

Hey there! Sounds like you're taking good care of your Volvo. Long drives do have a tendency to expose any potential issues faster. Now, even though there's a chance the overheating and check engine light could be caused by a faulty coolant temperature sensor, there might be other reasons such as a failing water pump, clogged radiator, blow head gasket or even your thermostat might have gone bad. Though my S60 had a defective cable connection, it wouldn't hurt to get the coolant sensor and the coolant system as a whole checked out at a reliable mechanic's place. Remember to ensure they connect the computer to check for fault codes that might reveal any underlying issues with the engine management system. Let's cross fingers it's just a simple and inexpensive fix! In any case, keep us updated man, I’d be interested to hear the diagnosis. Drive safe!

(Translated from German)

Thanks a ton for the advice! It definitely puts my mind at ease knowing there might be a simple solution to this. I'll be sure to take my car to the mechanic and have him run a thorough check as you've suggested. Will definitely update you once I figure out what's causing all this ruckus! Cheers and thanks again! Safe driving!

(Translated from German)