Elantra Crankshaft Sensor Issue

Sounds familiar! I had similar symptoms with my old Opel Astra. The check engine light was the first sign, followed by the car feeling sluggish. Eventually, it turned out to be a faulty crank sensor messing with the timing. Before you go too deep, are you sure it's not just a misfire? Have you checked your spark plugs and ignition coils recently? Sometimes, a simple misfire can trigger similar codes.

Thanks for the quick response! I haven't specifically checked the spark plugs, since it's a diesel. I thought misfires were more of a gasoline engine issue. Could that still be related to this reference value problem, or is it more likely the crank sensor as the codes suggest?

My bad, I missed the diesel part! With the diesel, it's less about spark plugs and more about the fuel injection system. But yeah, if the code specifically points to the crank sensor and you're getting that reference value error, it's highly probable that sensor is the culprit. Honestly, save yourself the headache and get it checked by a pro. It could also be something with the timing chain, but a bad sensor is way more common. I ended up taking my Astra to a shop, and they sorted it out quickly.

Thanks! I appreciate the advice. I took it to my local mechanic, and you were spot on. It was the crankshaft sensor. The reference value was completely off. New sensor installed and the total cost came to 340€. Runs like new again!