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There is usually a mesh filter in the oil line to the turbo. The 1.6 ford/psa hdi has issues with bits getting in to the oil and blocking the feed to the turbo.
DPF can be cleaned out, but then the time to clean out the dpf can be the same as a replacement.
On the oe software you can force the vehicle in to DPF regen. That means the car doing odd stuff while stopped so the fear is something going wrong.
lynx
Standard waste gate, no vanes or in line filter.
Seem to be a lot of folk with this diesel engine getting told they turbo's cooked when actually just gunked up with soot or faulty sensors with garages telling them to replace whole turbo, replace ECU, replace DPF and all sorts of expensive and outlandish cures.
Just seems like an overly complex and ineffective way of trying to make diesel engines seem 'clean' and some owners being sneaky by blanking off the ERG and remapping to get around it.