Peugeot 108 auxiliary heater malfunction

Hello! I have a Peugeot 108 as well, and I actually faced something similar a while back. The symptoms you described – inability to activate the parking heater and the error code – sound awfully familiar. Was anything else unusual happening with the heating or blower?

Thanks! No, nothing else seemed unusual with the blower motor or temperature; the only issue is that the parking heater completely refuses to start. Do you recall what the eventual cause of your issue was?

Yes, it does sound like the same issue I experienced. In my case, the issue was indeed a defective glow plug for the auxiliary heater. It's almost certainly the same for you, with the parking heater failing. I'd strongly recommend taking it to a workshop; it seems like you will need to change the glow plug. My repair ended up costing about 440€.

Thank you so much for your help and for confirming my suspicions! I will take your advice and schedule an appointment with a workshop to have the glow plug checked and replaced. It's good to know what to expect regarding the cost as well. I really appreciate your help with this heating system problem!