Lexus IS Crankshaft Sensor Issue

The symptoms you describe, coupled with the diagnostic trouble code indicating a crankshaft to camshaft correlation issue, strongly suggest a potential problem within the engine's timing synchronization system. While a defective crankshaft position sensor is a plausible cause, have you considered other potential factors? Could there be an issue with the camshaft position sensor, or perhaps even timing chain wear affecting the relative positions of the crankshaft and camshaft? Have you verified the integrity of the wiring harnesses and connectors associated with both sensors?

Timing chain wear at 93k km? Seems a bit early, doesn't it? Okay, so you think it could also be the cam sensor acting up? Any way to know for sure which one it is without just throwing parts at it? Or should I just check the wiring and bite the bullet with a sensor replacement?

While timing chain wear at your vehicle's current mileage is less common, it remains a possibility, dependent on prior maintenance and driving conditions. Given the uncertainty and the potential for misdiagnosis, I would suggest consulting a qualified technician. They possess the diagnostic tools and expertise to accurately pinpoint the failing component and perform the necessary repairs. It might save you money in the long run.

Thanks. I appreciate the insight. Ended up taking it to the shop; you were spot on. It was the crankshaft sensor, after all. Replaced it, and the car's back to its old self. Cost me 340€ including labor. Cheers!