C5 Hdi Lack Of Power And De-Pollution Fault P2084 And P2562

[11esprit]

Just as I fixed the last issue I am now having a new issue with my mk2 C5 138 hdi.  There is a lack of low down power and also a permanent depollution faulty message with the check engine light on.  I also ocassionally get the ASR/ ESR parking brake faulty but this is only probably once a week.  I drive around 500 motorway miles a week so the DPF should be getting cleared.  The scanner shows P2084 and P2562 faults but not sure what it points towards.  I have ruled out Maf sensor as unplugging makes no difference.  I cannot see any vacuum leaks or leaks in the pipes but struggling to diagnose the issue.

 

 

[paul.h]

If unplugging the MAF sensor makes no difference then I would think that means it could be faulty since it may be in limp mode.

 

A search suggests it could be the dpf temperature sensor that is faulty http://www.peugeotforums.com/forums/407-41/fault-code-p2084-9428/index2.html for P2084.

 

P2562 suggests it could be something to do with the turbo http://www.honestjohn.co.uk/forum/post/?t=88917