DMax Temperature Sensor Failure Hits Multiple Systems

Had a similar situation with my 2013 Chevy Silverado diesel. Outside temperature sensor failure caused multiple system malfunctions, pretty much identical to your symptoms. The vehicle temperature gauge readings were all over the place, and the car temperature sensor needed complete diagnostics. Initially thought it was just a connection issue, but sensor diagnostics revealed the outside temperature sensor itself was shot. The connector plug had some corrosion too, which needed cleaning. Temperature sensor replacement was straightforward, took about an hour at the shop. They also found and fixed a damaged wiring harness near the sensor that was causing intermittent connection problems. This was actually the more serious issue, as bad wiring could've affected other systems over time. The fix resolved all symptoms, A/C, mirror heaters, and washer nozzles all working properly now. Would recommend getting it checked soon since faulty temperature readings can mess with various engine management systems. Based on your symptoms and error code, sounds exactly like what I dealt with. Look for a shop that specializes in diesel diagnostics, they'll know these systems better.

Thanks for sharing that experience with the Silverado, definitely matches what I'm seeing with my DMax. Quick follow-up: mind sharing what the repair cost was? Really helps to have a ballpark figure before heading to the shop. Also curious if you've had any other sensor-related issues pop up since getting it fixed? My temperature readings are getting more erratic by the day, and I'd rather tackle this before it potentially causes bigger problems with other systems. Appreciate the tip about finding a diesel specialist for the diagnostics.

Just had my DMax back from the shop, turned out to be exactly what we discussed earlier. The temperature monitoring system is working perfectly now. Best part? It was a simpler fix than my previous Silverado issue. In my case, they found a faulty cable connection to the outside temperature sensor, just needed a proper reconnection and cleaning. Total repair cost was 95€, which was way less than I'd originally paid for my Silverado's complete sensor replacement. No other sensor issues have popped up since the fix. A/C, mirror heaters, and washer nozzles are all working like new. The vehicle temperature sensor readings are stable now, no more erratic behavior. Good call on getting it checked out quickly. These temperature sensor faults can be tricky, sometimes it's just a simple connection issue like mine, other times you might need a full sensor replacement. Either way, dealing with it early prevents bigger headaches with the engine management system down the road. The key was finding a shop that really knows their sensor diagnostics. They spotted the connection issue right away instead of just defaulting to a complete temperature sensor replacement.

Just got back from the mechanic and wanted to update everyone. The sensor calibration process revealed it was actually a bit more complex than expected. Had to get both the outside temperature sensor replaced and some wiring fixed. Total bill came to around €350, higher than I'd hoped but still reasonable considering the work done. The mechanic found corroded wiring that was causing the erratic temperature readings. The vehicle temperature gauge is now working perfectly, and all the other issues cleared up too. A/C kicks in right away, mirror heaters are functioning, and those washer nozzles aren't freezing anymore. Definitely worth getting the full diagnostics done rather than just swapping parts. Found a great diesel specialist shop through a, they really knew their stuff about sensor malfunction issues. They took the time to explain everything and even showed me the damaged parts. Sure beats my last mechanic who wanted to replace half the electrical system without proper diagnosis. Would definitely recommend getting any temperature-related issues checked out early. What started as a minor annoyance could've turned into a much bigger problem if left unchecked.