2.0 HDi (RHR) turbo overpressuring

[vallium]

Citroen C5 X7 with VIN VF7**************[VIN obfuscated, can be read by forum staff] is throwing P11AA code mostly when accelerating above 3000 rpm in higher gears. On longer motorway drives it can be joined with P0234.


This is plot of a longish test drive

in better quality

https://postimg.cc/VJGGkS6b

What strikes me is that Turbo Position Repeat starts at 50%, is pretty much constantly above instruction yet there are some random drops towards 0%. Don't know what to make of it though.

[vallium]

Could somebody and by that I mean GiveMeABreak please give a correct turbo pressure transducer part number for VIN in upper post.

From my lookup there's either 1618X2/9661960380/PIERBURG 7.01633.04.0 (black body, cheaper in Pieburg guise)



or 1618JH/9652570180/PIERBURG 7.00968.04.0 (brown body, more expensive in Pierburg guise)



Will try and check tomorrow if there are visible part numbers on installed part. It definitely has black body and looks original.

Either way, they appear identical outside of vacuum line connectors.