Peugeot 208 Auxiliary Heater Problem

It sounds like there could be an issue with the heating system. When you say it won't activate, does that mean the parking heater function isn't working at all? Do you notice any unusual noises when you try to turn it on, or any change in the climate control's performance otherwise?

Yeah, the parking heater is completely dead. No noises or anything when I try to activate it. The climate control seems normal otherwise. Could it be a fuse or something simple?

Given the symptoms and the error code, a defective glow plug is a likely cause. While a fuse is possible, a glow plug issue is more consistent with the symptoms. The repair cost is estimated around 440€. It would be best to take it to a workshop for a proper diagnosis and repair.

Thanks for the info! I took it to the shop, and you were spot on. It was indeed a defective glow plug in the auxiliary heater. They replaced it, and everything is working fine now.