Erratic transmission and warning light on 2018 Peugeot 301 Diesel: Experience reports wanted

Hey, I had similar issues with my 2015 Peugeot 3008, my gearbox changing and jumping was an alarm signal that my gearbox control unit was faulty. I had to take it to the garage and that particular part had to be replaced. It was a serious problem because it caused unsafe driving and could lead to the entire transmission failing. Hope that helps you.

(Translated from German)

Hey, really stupid with your 301. It's funny, I once had a similar problem with my old Peugeot. The gearbox jumping is really no fun. Do you happen to remember the cost of the repair and whether any other problems have arisen since then? Thanks in advance!

(Translated from German)

Hey, sure, I can tell you. The repair of the transmission control unit wasn't cheap, it cost me €1000. But since I've been to the mechanic, the problem with the automatic gearbox parking position switch has been fixed and the constant changing and jumping of the gearbox has also gone. So, as expensive as it was, it was definitely worth it. So far I've had no further problems, my Peugeot is running like clockwork again. I hope it stays that way!

(Translated from German)

Hey, really cool that you guys are sharing with me. It's a real shame that it was so expensive, but if the problem is solved, it's probably worth it. I'm going to take my Peugeot to the garage tomorrow and hope it fixes everything. There's nothing like smooth driving. Thanks again for your help guys. You guys are the best!

(Translated from German)