Two problems related to gas recirculation valve (egr valve) have been reported for the 2015 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Hyundai Sonata based on all problems reported for the 2015 Sonata.
I was driving to work Friday 12-6 at approx. 7:24am and the check engine light comes on and flashing. I then pulled over to see what was wrong and I turned the car off and back on the car will then only accelerate to 10 mph then slowly accelerate but will not go past 63. I was able to drive it back to a mechanic who then diagnosed it and stated it was a p3126 obd-ii diagnostic powertrain (p) trouble code description p3126 engine trouble code is about exhaust gas recirculation sensor b circuit high. Reason for p3126 code the reason of p3126 obd-ii engine trouble code is engine oil temperature sensor malfunction. P3126 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission. Contacted Hyundai and justin asked me was the check engine flashing I advised him yes. He said it was more than likely a recall. He made me an appt for Tuesday 12-10 @ 7:15am. I proceeded to drive my vehicle to Hyundai and I was told it's not a recall and they are going to charge me $175 just to diagnose the problem. I drove it back to my job in flowery branch GA and contacted geico to tow it back to my house.
1/2 mile after starting my vehicle and driving approx 30 mph, my car shuttered and shook. Pulled over and it seemed to fix itself so I continued 23 miles to work. Was approx 39 degrees according to car dashboard. Leaving work 9 hours later, I drove approx 1. 5 miles in stop and go traffic, speed no higher than 25-30 mph, crossed over rr tracks and the car shuttered and then shut off completely rolling to a stop. Threw on my hazards and the screen indicated I should put it in park and restart. The battery light and master indicator light came on. Car restarted and the lights disappeared. Went straight to Hyundai dealer. They attempted a 17 mile road test the next day after the car sat overnight and it did not repeat the issue. Nothing was stored in the computer system from when the lights came on. They have no explanation. Oil was changed and took car back at 5pm the day after the issue took place. Drove 24 miles to work today and it did not repeat yet.