Berlingo fuel tank ventilation issue

Whoa, sounds familiar! The fuel tank ventilation system is a real headache sometimes. You're right, the charcoal canister is a common culprit. The system's designed to capture fuel vapors to prevent them from escaping into the atmosphere, and the canister stores those vapors. If it's cracked or saturated, it can cause all sorts of problems, like the ones you're describing. It could also be the pressure sensor that detects leaks, or the purge valve that controls the airflow. Have you noticed any hissing sounds around the fuel tank or filler neck?

Thanks for the quick reply! No hissing sounds that I've noticed. I've visually inspected the charcoal canister as best I can, but it's kind of tucked away. Is there a way to test the pressure sensor or purge valve without specialized equipment?

Testing those components without proper tools can be tricky. The pressure sensor uses a specific voltage range to communicate with the ECU, and the purge valve requires actuation to check its flow. Honestly, with those symptoms and your mileage, and given it's a safety critical part, it's probably best to get it checked out by a workshop that can perform a smoke test on the fuel system. That'll pinpoint any leaks for sure. Don't want any fumes building up!

Okay, thanks for the advice. I was hoping to avoid the shop, but it sounds like that's the safest bet. I took it in, and you were spot on - it was a cracked charcoal canister. The total repair cost came out to around 275€. Thanks again for pointing me in the right direction!