Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
whats likely is either the DPF or cataylst is blocked and creating excessive heat
if the car feels a bit down on power this would back this up and I'd suggest removing the precat sensor so you can peer inside and check for blockage and damage
there should also be an exhaust heat-shield in this area so check that its there and not broken / missing
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