Peugeot 407 depullution system faulty

Car: Peugeot 407
Variant: 2.0 litre diesel sport
Model Year: 2010
Depullution system warning comes up if i accelerate quickly, full tank of fuel, cant go over 50 mph when warning on, car run a bit sluggish , light goes off after a couple of days if i drive like my granny would, but soon as I try to accelerate light comes back on, how can i fix the problem as it put me in some tricky situations when pulling out of junctions etc.
Posted: Nov 12, 2021 (3 years ago)
Unless scanned for fault codes , can only guess . Change fuel filter , check for partially blocked cat / exhaust
Posted Nov 12, 2021 (3 years ago)

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