mariedark1
Mini Cabrio diesel preheating lamp issue
4 comment(s)
mariedark1 (Author)
Interesting point. The coolant temperature sensor does that typically trigger a specific fault code, or could it potentially manifest as a generic 'engine misfire' or 'preheating system' error? I'm trying to understand if that might be a contributing factor, or perhaps a separate issue altogether.
andreasschulz1
In my case, the Peugeot threw a specific code for the coolant sensor, but I suppose it could manifest in other ways. Given you're getting a preheating lamp error specifically, and you have a diesel, glow plugs are the prime suspect. Given the symptoms are quite prominent, I'd suggest taking it to a workshop. It's often hard to diagnose electrical problems yourself, so maybe better to get an expert in.
mariedark1 (Author)
Just got the Mini back from the shop. Indeed, it was the glow plugs. 440€ lighter, but at least the engine light is off.
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andreasschulz1
Sounds like a glow plug issue, yeah. I had something similar happen with my old Peugeot, though it was petrol, so no glow plugs, obviously. I had a faulty coolant temperature sensor. The engine thought it was always cold, so it was dumping extra fuel in. Did you check the coolant temperature sensor? That can cause similar symptoms and throw an error code.