S2000 Camshaft Sensor Issue

It is indeed plausible that a defective cable or plug connection to the camshaft position sensor is causing your described symptoms. The camshaft position sensor is critical for the engine control unit (ECU) to determine the position of the camshaft, which is essential for proper ignition and fuel injection timing. A loose or damaged connection can cause intermittent or complete signal loss, leading to starting difficulties, reduced engine power, and the illumination of the check engine light, as well as the storage of a diagnostic trouble code (DTC) related to the sensor in the error memory. Have you tried wiggling the connector and observing if the engine RPM changes?

Thanks for the detailed explanation! Yeah, I tried wiggling the connector a bit while the engine was running (after a lot of attempts to start it). Didn't notice any change in the engine. Is there anything else I should check before replacing the sensor itself?

Given that manipulating the connector did not yield any discernible change in engine behavior, it is advisable to proceed with caution. While a faulty sensor remains a possibility, the absence of any response during your manipulation suggests that the issue may indeed lie within the wiring or the connector itself. Therefore, I suggest visiting a qualified workshop. They will be able to perform a thorough diagnosis and precise component replacement.

Took it to a local mechanic as you suggested. Turns out it WAS just a corroded connector on the camshaft sensor. They cleaned it up and replaced the connector, and everything's running smoothly now! Cost me about 95€, which is way better than a new sensor. Thanks for the advice!