2013 Volvo v70 d5 twin turbo hesitating
 

Hi sorry if I’m posting in the wrong place I’m a newbie. I’ve dknt lots of reading regarding my issue but still haven’t had any look in fixing. My Volvo is a 2013 v70 215hp but it feels like it’s just the little turbo working as the revs get to 3k and don’t want to go any more. I can happily get to 70 changing low down the revs I have scanned it and only found one fault code p029900 a underboost fault
I have tried a lot of sensors as my mrs has a XC60 same engine but to no avail. I’ve tried airflow meter both map sensors the 2 solenoids at the back by the turbos checked the boost pipes and vac pipes as much as I can. I just don’t know where to go next . I can get pics of live data but they don’t mean anything to me.? I would lpve some advise before I book it in at Volvo and they charge me £130+ per hour! Thanks in advanced

Any lights on the dash to coincide with the fault?

A quick scan of the Diesel engine section of the forum finds this https://www.volvoforums.org.uk/showthread.php?t=290385

Thanks for the link my fault is about different no dpf faults just got p029900 turbo underboost.cant see any split vac pipes or hoses and as it’s an underboost fault I’d be seeing an overboost fault with any damaged inter cooler pipes. I can clear code but reappears after a few miles and still lacks power. Thanks