Peugeot 5008 Auxiliary Heater Problem

Whoa, glow plugs on the fritz in the auxiliary heater? Sounds plausible. Had a similar gremlin in my old Citroen C4 Picasso some moons ago. Tell me, are you getting any strange whirring noises from the blower motor beforehand? And have you checked the heater core for any signs of blockages? Just throwing some spaghetti at the wall here.

Thank you for the swift response! Regarding the blower motor, its operation seems normal, no unusual noises detected. I haven't yet inspected the heater core directly. Could a partially blocked heater core truly prevent the activation of the auxiliary heater? I thought its primary effect would be diminished heating performance, rather than a complete system shutdown.

Alright, with the blower motor sounding okay, heater core blockage is less likely to be the sole culprit. However, these systems are often interconnected, and strange things happen. Given the error code and the glow plug suspicion, you're probably on the right track. I'd advise, reluctantly, to bite the bullet and get it checked at a reputable workshop. They have the tools to properly diagnose the auxiliary heating system. It's gonna be around 440€, all in with parts and labour.

I appreciate the confirmation and insights. It appears my initial assessment was accurate. I've scheduled an appointment with a trusted mechanic to replace the glow plug. Hopefully, this resolves the issue without further complications! Thanks again.