V50 Transmission Issues

I had similar symptoms on my old Alfa Romeo. Warning lights, weird shifting. The error codes pointed to a sensor as well. Have you checked the actual oil level in the transmission? If it is low, that can throw off the sensor reading and cause havoc. It's the first thing I'd rule out.

Thanks for the tip! I haven't checked the transmission oil level yet. I wasn't sure if it was something I could easily do myself. Where exactly is the dipstick, and is there anything specific I need to look out for when checking the level?

On the Volvo, I am not entirely sure where the dipstick is located. However, if the oil level is OK, you can assume the sensor is faulty. I advise that you take it to a specialist garage to have it checked. They will be able to tell you more precisely whether the sensor is actually defective.

Thanks for your advice. I did take it to a shop, and you were spot on. The transmission oil level was indeed low. They topped it up and replaced the faulty sensor. Total cost was 365€. Hopefully, that's the end of my transmission woes!