CT200h Oil Level Sensor Fault

Sounds familiar. Had a similar oil level issue with my old Saab, though not a hybrid. Same symptoms - warning light, error message. Did you check the sensor's wiring? Could be a simple connection issue.

Thanks for the tip! Wiring was my first instinct, too. Where exactly should I be looking for the said sensor's wiring? Underneath the car, or is it more accessible from the engine bay?

On my Saab it was a pain to get to, underneath mostly, but I'd start by checking the accessible connections in the engine bay first. If that looks okay, a garage might be best. No point getting your hands dirty for nothing.

Took it to the shop as suggested. Turned out to be a defective connector as suspected. They replaced the connector, and the error is gone. Total cost: 95€ Thanks a bunch for pointing me in the right direction!